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Finding the Fourth Proportional to 519,706.80, 779,171.40 and 283,316.40

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Solution

The fourth proportional to 519,706.80, 779,171.40 and 283,316.40 is: 424,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,706.80 : 779,171.40 = 283,316.40 : x
  2. Step 2: Convert to fraction form
    519,706.80/779,171.40 = 283,316.40/x
  3. Step 3: Cross multiply
    519,706.80x = 779,171.40 × 283,316.40
  4. Step 4: Simplify right side
    519,706.80x = 220,752,036,030.96
  5. Step 5: Solve for x
    x = 220,752,036,030.96/519,706.80
  6. Step 6: Final answer
    x = 424,762.65

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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.