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Finding the Fourth Proportional to 113,652.72, 156,841.44 and 65,934.48

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Solution

The fourth proportional to 113,652.72, 156,841.44 and 65,934.48 is: 90,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,652.72 : 156,841.44 = 65,934.48 : x
  2. Step 2: Convert to fraction form
    113,652.72/156,841.44 = 65,934.48/x
  3. Step 3: Cross multiply
    113,652.72x = 156,841.44 × 65,934.48
  4. Step 4: Simplify right side
    113,652.72x = 10,341,258,788.85
  5. Step 5: Solve for x
    x = 10,341,258,788.85/113,652.72
  6. Step 6: Final answer
    x = 90,989.98

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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.