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Finding the Fourth Proportional to 113,391.85, 156,471.65 and 65,648.27

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Solution

The fourth proportional to 113,391.85, 156,471.65 and 65,648.27 is: 90,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,391.85 : 156,471.65 = 65,648.27 : x
  2. Step 2: Convert to fraction form
    113,391.85/156,471.65 = 65,648.27/x
  3. Step 3: Cross multiply
    113,391.85x = 156,471.65 × 65,648.27
  4. Step 4: Simplify right side
    113,391.85x = 10,272,093,435.66
  5. Step 5: Solve for x
    x = 10,272,093,435.66/113,391.85
  6. Step 6: Final answer
    x = 90,589.35

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1.5x scale

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.