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Finding the Fourth Proportional to 113,718.60, 156,932.46 and 66,000.60

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Solution

The fourth proportional to 113,718.60, 156,932.46 and 66,000.60 is: 91,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,718.60 : 156,932.46 = 66,000.60 : x
  2. Step 2: Convert to fraction form
    113,718.60/156,932.46 = 66,000.60/x
  3. Step 3: Cross multiply
    113,718.60x = 156,932.46 × 66,000.60
  4. Step 4: Simplify right side
    113,718.60x = 10,357,636,519.48
  5. Step 5: Solve for x
    x = 10,357,636,519.48/113,718.60
  6. Step 6: Final answer
    x = 91,081.29

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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.