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Finding the Fourth Proportional to 111,860.59, 154,370.85 and 60,876.61

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Solution

The fourth proportional to 111,860.59, 154,370.85 and 60,876.61 is: 84,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,860.59 : 154,370.85 = 60,876.61 : x
  2. Step 2: Convert to fraction form
    111,860.59/154,370.85 = 60,876.61/x
  3. Step 3: Cross multiply
    111,860.59x = 154,370.85 × 60,876.61
  4. Step 4: Simplify right side
    111,860.59x = 9,397,574,030.82
  5. Step 5: Solve for x
    x = 9,397,574,030.82/111,860.59
  6. Step 6: Final answer
    x = 84,011.48

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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.