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Finding the Fourth Proportional to 134,512.57, 185,620.17 and 77,148.91

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Solution

The fourth proportional to 134,512.57, 185,620.17 and 77,148.91 is: 106,461.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,512.57 : 185,620.17 = 77,148.91 : x
  2. Step 2: Convert to fraction form
    134,512.57/185,620.17 = 77,148.91/x
  3. Step 3: Cross multiply
    134,512.57x = 185,620.17 × 77,148.91
  4. Step 4: Simplify right side
    134,512.57x = 14,320,393,789.51
  5. Step 5: Solve for x
    x = 14,320,393,789.51/134,512.57
  6. Step 6: Final answer
    x = 106,461.38

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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.