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Finding the Fourth Proportional to 99,237.64, 136,948.60 and 53,915.61

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Solution

The fourth proportional to 99,237.64, 136,948.60 and 53,915.61 is: 74,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,237.64 : 136,948.60 = 53,915.61 : x
  2. Step 2: Convert to fraction form
    99,237.64/136,948.60 = 53,915.61/x
  3. Step 3: Cross multiply
    99,237.64x = 136,948.60 × 53,915.61
  4. Step 4: Simplify right side
    99,237.64x = 7,383,667,172.86
  5. Step 5: Solve for x
    x = 7,383,667,172.86/99,237.64
  6. Step 6: Final answer
    x = 74,403.90

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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.