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Finding the Fourth Proportional to 157,685.72, 217,718.92 and 97,338.29

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Solution

The fourth proportional to 157,685.72, 217,718.92 and 97,338.29 is: 134,396.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,685.72 : 217,718.92 = 97,338.29 : x
  2. Step 2: Convert to fraction form
    157,685.72/217,718.92 = 97,338.29/x
  3. Step 3: Cross multiply
    157,685.72x = 217,718.92 × 97,338.29
  4. Step 4: Simplify right side
    157,685.72x = 21,192,386,406.53
  5. Step 5: Solve for x
    x = 21,192,386,406.53/157,685.72
  6. Step 6: Final answer
    x = 134,396.36

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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.