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Finding the Fourth Proportional to 121,371.92, 181,934.68 and 46,472.88

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Solution

The fourth proportional to 121,371.92, 181,934.68 and 46,472.88 is: 69,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,371.92 : 181,934.68 = 46,472.88 : x
  2. Step 2: Convert to fraction form
    121,371.92/181,934.68 = 46,472.88/x
  3. Step 3: Cross multiply
    121,371.92x = 181,934.68 × 46,472.88
  4. Step 4: Simplify right side
    121,371.92x = 8,455,028,551.48
  5. Step 5: Solve for x
    x = 8,455,028,551.48/121,371.92
  6. Step 6: Final answer
    x = 69,662.15

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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.