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Finding the Fourth Proportional to 134,679.39, 185,854.14 and 74,248.63

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Solution

The fourth proportional to 134,679.39, 185,854.14 and 74,248.63 is: 102,461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,679.39 : 185,854.14 = 74,248.63 : x
  2. Step 2: Convert to fraction form
    134,679.39/185,854.14 = 74,248.63/x
  3. Step 3: Cross multiply
    134,679.39x = 185,854.14 × 74,248.63
  4. Step 4: Simplify right side
    134,679.39x = 13,799,415,274.83
  5. Step 5: Solve for x
    x = 13,799,415,274.83/134,679.39
  6. Step 6: Final answer
    x = 102,461.22

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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.