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Finding the Fourth Proportional to 92,693.60, 127,934.88 and 54,988.64

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Solution

The fourth proportional to 92,693.60, 127,934.88 and 54,988.64 is: 75,894.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,693.60 : 127,934.88 = 54,988.64 : x
  2. Step 2: Convert to fraction form
    92,693.60/127,934.88 = 54,988.64/x
  3. Step 3: Cross multiply
    92,693.60x = 127,934.88 × 54,988.64
  4. Step 4: Simplify right side
    92,693.60x = 7,034,965,059.76
  5. Step 5: Solve for x
    x = 7,034,965,059.76/92,693.60
  6. Step 6: Final answer
    x = 75,894.83

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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.