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Finding the Fourth Proportional to 99,915.48, 137,881.76 and 54,592.48

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Solution

The fourth proportional to 99,915.48, 137,881.76 and 54,592.48 is: 75,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,915.48 : 137,881.76 = 54,592.48 : x
  2. Step 2: Convert to fraction form
    99,915.48/137,881.76 = 54,592.48/x
  3. Step 3: Cross multiply
    99,915.48x = 137,881.76 × 54,592.48
  4. Step 4: Simplify right side
    99,915.48x = 7,527,307,225.16
  5. Step 5: Solve for x
    x = 7,527,307,225.16/99,915.48
  6. Step 6: Final answer
    x = 75,336.75

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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.