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Finding the Fourth Proportional to 407,737.60, 611,387.70 and 170,812.60

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Solution

The fourth proportional to 407,737.60, 611,387.70 and 170,812.60 is: 256,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,737.60 : 611,387.70 = 170,812.60 : x
  2. Step 2: Convert to fraction form
    407,737.60/611,387.70 = 170,812.60/x
  3. Step 3: Cross multiply
    407,737.60x = 611,387.70 × 170,812.60
  4. Step 4: Simplify right side
    407,737.60x = 104,432,722,645.02
  5. Step 5: Solve for x
    x = 104,432,722,645.02/407,737.60
  6. Step 6: Final answer
    x = 256,127.28

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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.