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Finding the Fourth Proportional to 64,216.70, 96,281.85 and 29,138.30

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Solution

The fourth proportional to 64,216.70, 96,281.85 and 29,138.30 is: 43,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,216.70 : 96,281.85 = 29,138.30 : x
  2. Step 2: Convert to fraction form
    64,216.70/96,281.85 = 29,138.30/x
  3. Step 3: Cross multiply
    64,216.70x = 96,281.85 × 29,138.30
  4. Step 4: Simplify right side
    64,216.70x = 2,805,489,429.86
  5. Step 5: Solve for x
    x = 2,805,489,429.86/64,216.70
  6. Step 6: Final answer
    x = 43,687.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.