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Finding the Fourth Proportional to 316,781.66, 437,140.32 and 173,516.76

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Solution

The fourth proportional to 316,781.66, 437,140.32 and 173,516.76 is: 239,443.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,781.66 : 437,140.32 = 173,516.76 : x
  2. Step 2: Convert to fraction form
    316,781.66/437,140.32 = 173,516.76/x
  3. Step 3: Cross multiply
    316,781.66x = 437,140.32 × 173,516.76
  4. Step 4: Simplify right side
    316,781.66x = 75,851,171,991.76
  5. Step 5: Solve for x
    x = 75,851,171,991.76/316,781.66
  6. Step 6: Final answer
    x = 239,443.07

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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.