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Finding the Fourth Proportional to 113,589.79, 156,780.63 and 70,601.75

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Solution

The fourth proportional to 113,589.79, 156,780.63 and 70,601.75 is: 97,447.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,589.79 : 156,780.63 = 70,601.75 : x
  2. Step 2: Convert to fraction form
    113,589.79/156,780.63 = 70,601.75/x
  3. Step 3: Cross multiply
    113,589.79x = 156,780.63 × 70,601.75
  4. Step 4: Simplify right side
    113,589.79x = 11,068,986,844.10
  5. Step 5: Solve for x
    x = 11,068,986,844.10/113,589.79
  6. Step 6: Final answer
    x = 97,447.02

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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.