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Finding the Fourth Proportional to 113,728.26, 156,894.26 and 65,953.92

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Solution

The fourth proportional to 113,728.26, 156,894.26 and 65,953.92 is: 90,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,728.26 : 156,894.26 = 65,953.92 : x
  2. Step 2: Convert to fraction form
    113,728.26/156,894.26 = 65,953.92/x
  3. Step 3: Cross multiply
    113,728.26x = 156,894.26 × 65,953.92
  4. Step 4: Simplify right side
    113,728.26x = 10,347,791,472.50
  5. Step 5: Solve for x
    x = 10,347,791,472.50/113,728.26
  6. Step 6: Final answer
    x = 90,986.98

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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.