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Finding the Fourth Proportional to 113,565.74, 156,720.72 and 65,846.76

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Solution

The fourth proportional to 113,565.74, 156,720.72 and 65,846.76 is: 90,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,565.74 : 156,720.72 = 65,846.76 : x
  2. Step 2: Convert to fraction form
    113,565.74/156,720.72 = 65,846.76/x
  3. Step 3: Cross multiply
    113,565.74x = 156,720.72 × 65,846.76
  4. Step 4: Simplify right side
    113,565.74x = 10,319,551,807.26
  5. Step 5: Solve for x
    x = 10,319,551,807.26/113,565.74
  6. Step 6: Final answer
    x = 90,868.53

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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.