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Finding the Fourth Proportional to 111,508.86, 153,882.30 and 63,763.14

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Solution

The fourth proportional to 111,508.86, 153,882.30 and 63,763.14 is: 87,993.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,508.86 : 153,882.30 = 63,763.14 : x
  2. Step 2: Convert to fraction form
    111,508.86/153,882.30 = 63,763.14/x
  3. Step 3: Cross multiply
    111,508.86x = 153,882.30 × 63,763.14
  4. Step 4: Simplify right side
    111,508.86x = 9,812,018,638.42
  5. Step 5: Solve for x
    x = 9,812,018,638.42/111,508.86
  6. Step 6: Final answer
    x = 87,993.18

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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.