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Finding the Fourth Proportional to 572,010.18, 789,374.18 and 317,360.76

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Solution

The fourth proportional to 572,010.18, 789,374.18 and 317,360.76 is: 437,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,010.18 : 789,374.18 = 317,360.76 : x
  2. Step 2: Convert to fraction form
    572,010.18/789,374.18 = 317,360.76/x
  3. Step 3: Cross multiply
    572,010.18x = 789,374.18 × 317,360.76
  4. Step 4: Simplify right side
    572,010.18x = 250,516,389,689.18
  5. Step 5: Solve for x
    x = 250,516,389,689.18/572,010.18
  6. Step 6: Final answer
    x = 437,957.92

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.