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Finding the Fourth Proportional to 621,657.96, 932,599.68 and 256,920.17

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Solution

The fourth proportional to 621,657.96, 932,599.68 and 256,920.17 is: 385,426.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,657.96 : 932,599.68 = 256,920.17 : x
  2. Step 2: Convert to fraction form
    621,657.96/932,599.68 = 256,920.17/x
  3. Step 3: Cross multiply
    621,657.96x = 932,599.68 × 256,920.17
  4. Step 4: Simplify right side
    621,657.96x = 239,603,667,946.97
  5. Step 5: Solve for x
    x = 239,603,667,946.97/621,657.96
  6. Step 6: Final answer
    x = 385,426.85

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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.