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Finding the Fourth Proportional to 519,310.13, 778,965.19 and 145,333.13

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Solution

The fourth proportional to 519,310.13, 778,965.19 and 145,333.13 is: 217,999.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,310.13 : 778,965.19 = 145,333.13 : x
  2. Step 2: Convert to fraction form
    519,310.13/778,965.19 = 145,333.13/x
  3. Step 3: Cross multiply
    519,310.13x = 778,965.19 × 145,333.13
  4. Step 4: Simplify right side
    519,310.13x = 113,209,444,965.59
  5. Step 5: Solve for x
    x = 113,209,444,965.59/519,310.13
  6. Step 6: Final answer
    x = 217,999.69

Related Problems

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Half scale
Find fourth proportional to 1,038,620.25, 1,557,930.38 and 290,666.25
Double scale
Find fourth proportional to 519,311.13, 778,966.69 and 145,334.13
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.