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Finding the Fourth Proportional to 96,587.70, 144,881.55 and 76,758.90

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Solution

The fourth proportional to 96,587.70, 144,881.55 and 76,758.90 is: 115,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,587.70 : 144,881.55 = 76,758.90 : x
  2. Step 2: Convert to fraction form
    96,587.70/144,881.55 = 76,758.90/x
  3. Step 3: Cross multiply
    96,587.70x = 144,881.55 × 76,758.90
  4. Step 4: Simplify right side
    96,587.70x = 11,120,948,408.30
  5. Step 5: Solve for x
    x = 11,120,948,408.30/96,587.70
  6. Step 6: Final answer
    x = 115,138.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.