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Finding the Fourth Proportional to 111,468.32, 153,826.24 and 63,722.68

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Solution

The fourth proportional to 111,468.32, 153,826.24 and 63,722.68 is: 87,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,468.32 : 153,826.24 = 63,722.68 : x
  2. Step 2: Convert to fraction form
    111,468.32/153,826.24 = 63,722.68/x
  3. Step 3: Cross multiply
    111,468.32x = 153,826.24 × 63,722.68
  4. Step 4: Simplify right side
    111,468.32x = 9,802,220,267.12
  5. Step 5: Solve for x
    x = 9,802,220,267.12/111,468.32
  6. Step 6: Final answer
    x = 87,937.27

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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.