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Finding the Fourth Proportional to 111,127.68, 153,354.62 and 63,381.83

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Solution

The fourth proportional to 111,127.68, 153,354.62 and 63,381.83 is: 87,466.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,127.68 : 153,354.62 = 63,381.83 : x
  2. Step 2: Convert to fraction form
    111,127.68/153,354.62 = 63,381.83/x
  3. Step 3: Cross multiply
    111,127.68x = 153,354.62 × 63,381.83
  4. Step 4: Simplify right side
    111,127.68x = 9,719,895,846.24
  5. Step 5: Solve for x
    x = 9,719,895,846.24/111,127.68
  6. Step 6: Final answer
    x = 87,466.02

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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.