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Finding the Fourth Proportional to 111,517.61, 153,894.45 and 60,530.35

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Solution

The fourth proportional to 111,517.61, 153,894.45 and 60,530.35 is: 83,531.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,517.61 : 153,894.45 = 60,530.35 : x
  2. Step 2: Convert to fraction form
    111,517.61/153,894.45 = 60,530.35/x
  3. Step 3: Cross multiply
    111,517.61x = 153,894.45 × 60,530.35
  4. Step 4: Simplify right side
    111,517.61x = 9,315,284,921.56
  5. Step 5: Solve for x
    x = 9,315,284,921.56/111,517.61
  6. Step 6: Final answer
    x = 83,531.96

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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.