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Finding the Fourth Proportional to 75,600.90, 113,401.35 and 55,917.90

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Solution

The fourth proportional to 75,600.90, 113,401.35 and 55,917.90 is: 83,876.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,600.90 : 113,401.35 = 55,917.90 : x
  2. Step 2: Convert to fraction form
    75,600.90/113,401.35 = 55,917.90/x
  3. Step 3: Cross multiply
    75,600.90x = 113,401.35 × 55,917.90
  4. Step 4: Simplify right side
    75,600.90x = 6,341,165,349.17
  5. Step 5: Solve for x
    x = 6,341,165,349.17/75,600.90
  6. Step 6: Final answer
    x = 83,876.85

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1.5x scale

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.