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Finding the Fourth Proportional to 519,114.15, 778,671.23 and 414,138.15

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Solution

The fourth proportional to 519,114.15, 778,671.23 and 414,138.15 is: 621,207.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,114.15 : 778,671.23 = 414,138.15 : x
  2. Step 2: Convert to fraction form
    519,114.15/778,671.23 = 414,138.15/x
  3. Step 3: Cross multiply
    519,114.15x = 778,671.23 × 414,138.15
  4. Step 4: Simplify right side
    519,114.15x = 322,477,460,579.73
  5. Step 5: Solve for x
    x = 322,477,460,579.73/519,114.15
  6. Step 6: Final answer
    x = 621,207.23

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Half scale
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Double scale
Find fourth proportional to 519,115.15, 778,672.73 and 414,139.15
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.