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Finding the Fourth Proportional to 113,347.52, 156,452.52 and 75,621.68

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Solution

The fourth proportional to 113,347.52, 156,452.52 and 75,621.68 is: 104,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,347.52 : 156,452.52 = 75,621.68 : x
  2. Step 2: Convert to fraction form
    113,347.52/156,452.52 = 75,621.68/x
  3. Step 3: Cross multiply
    113,347.52x = 156,452.52 × 75,621.68
  4. Step 4: Simplify right side
    113,347.52x = 11,831,202,402.63
  5. Step 5: Solve for x
    x = 11,831,202,402.63/113,347.52
  6. Step 6: Final answer
    x = 104,379.90

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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.