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Finding the Fourth Proportional to 124,632.39, 186,650.55 and 71,881.95

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Solution

The fourth proportional to 124,632.39, 186,650.55 and 71,881.95 is: 107,651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,632.39 : 186,650.55 = 71,881.95 : x
  2. Step 2: Convert to fraction form
    124,632.39/186,650.55 = 71,881.95/x
  3. Step 3: Cross multiply
    124,632.39x = 186,650.55 × 71,881.95
  4. Step 4: Simplify right side
    124,632.39x = 13,416,805,502.57
  5. Step 5: Solve for x
    x = 13,416,805,502.57/124,632.39
  6. Step 6: Final answer
    x = 107,651.03

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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.