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Finding the Fourth Proportional to 621,951.40, 932,931.42 and 266,665.96

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Solution

The fourth proportional to 621,951.40, 932,931.42 and 266,665.96 is: 400,000.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,951.40 : 932,931.42 = 266,665.96 : x
  2. Step 2: Convert to fraction form
    621,951.40/932,931.42 = 266,665.96/x
  3. Step 3: Cross multiply
    621,951.40x = 932,931.42 × 266,665.96
  4. Step 4: Simplify right side
    621,951.40x = 248,781,052,728.46
  5. Step 5: Solve for x
    x = 248,781,052,728.46/621,951.40
  6. Step 6: Final answer
    x = 400,000.79

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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.