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Finding the Fourth Proportional to 445,812.68, 615,221.43 and 254,830.17

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Solution

The fourth proportional to 445,812.68, 615,221.43 and 254,830.17 is: 351,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,812.68 : 615,221.43 = 254,830.17 : x
  2. Step 2: Convert to fraction form
    445,812.68/615,221.43 = 254,830.17/x
  3. Step 3: Cross multiply
    445,812.68x = 615,221.43 × 254,830.17
  4. Step 4: Simplify right side
    445,812.68x = 156,776,981,594.54
  5. Step 5: Solve for x
    x = 156,776,981,594.54/445,812.68
  6. Step 6: Final answer
    x = 351,665.60

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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.