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Finding the Fourth Proportional to 113,505.76, 156,642.79 and 63,204.76

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Solution

The fourth proportional to 113,505.76, 156,642.79 and 63,204.76 is: 87,225.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,505.76 : 156,642.79 = 63,204.76 : x
  2. Step 2: Convert to fraction form
    113,505.76/156,642.79 = 63,204.76/x
  3. Step 3: Cross multiply
    113,505.76x = 156,642.79 × 63,204.76
  4. Step 4: Simplify right side
    113,505.76x = 9,900,569,947.68
  5. Step 5: Solve for x
    x = 9,900,569,947.68/113,505.76
  6. Step 6: Final answer
    x = 87,225.26

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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.