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Finding the Fourth Proportional to 134,717.60, 185,906.03 and 74,290.79

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Solution

The fourth proportional to 134,717.60, 185,906.03 and 74,290.79 is: 102,518.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,717.60 : 185,906.03 = 74,290.79 : x
  2. Step 2: Convert to fraction form
    134,717.60/185,906.03 = 74,290.79/x
  3. Step 3: Cross multiply
    134,717.60x = 185,906.03 × 74,290.79
  4. Step 4: Simplify right side
    134,717.60x = 13,811,105,927.77
  5. Step 5: Solve for x
    x = 13,811,105,927.77/134,717.60
  6. Step 6: Final answer
    x = 102,518.94

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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.