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Finding the Fourth Proportional to 338,720.79, 508,082.07 and 114,238.92

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Solution

The fourth proportional to 338,720.79, 508,082.07 and 114,238.92 is: 171,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,720.79 : 508,082.07 = 114,238.92 : x
  2. Step 2: Convert to fraction form
    338,720.79/508,082.07 = 114,238.92/x
  3. Step 3: Cross multiply
    338,720.79x = 508,082.07 × 114,238.92
  4. Step 4: Simplify right side
    338,720.79x = 58,042,746,948.16
  5. Step 5: Solve for x
    x = 58,042,746,948.16/338,720.79
  6. Step 6: Final answer
    x = 171,358.68

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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.