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Finding the Fourth Proportional to 581,646.10, 872,469.15 and 489,025.30

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Solution

The fourth proportional to 581,646.10, 872,469.15 and 489,025.30 is: 733,537.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,646.10 : 872,469.15 = 489,025.30 : x
  2. Step 2: Convert to fraction form
    581,646.10/872,469.15 = 489,025.30/x
  3. Step 3: Cross multiply
    581,646.10x = 872,469.15 × 489,025.30
  4. Step 4: Simplify right side
    581,646.10x = 426,659,487,819.50
  5. Step 5: Solve for x
    x = 426,659,487,819.50/581,646.10
  6. Step 6: Final answer
    x = 733,537.95

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Double scale
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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.