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Finding the Fourth Proportional to 111,494.29, 153,862.28 and 63,748.66

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Solution

The fourth proportional to 111,494.29, 153,862.28 and 63,748.66 is: 87,973.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,494.29 : 153,862.28 = 63,748.66 : x
  2. Step 2: Convert to fraction form
    111,494.29/153,862.28 = 63,748.66/x
  3. Step 3: Cross multiply
    111,494.29x = 153,862.28 × 63,748.66
  4. Step 4: Simplify right side
    111,494.29x = 9,808,514,140.91
  5. Step 5: Solve for x
    x = 9,808,514,140.91/111,494.29
  6. Step 6: Final answer
    x = 87,973.25

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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.