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Finding the Fourth Proportional to 111,399.95, 153,729.83 and 63,001.04

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Solution

The fourth proportional to 111,399.95, 153,729.83 and 63,001.04 is: 86,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,399.95 : 153,729.83 = 63,001.04 : x
  2. Step 2: Convert to fraction form
    111,399.95/153,729.83 = 63,001.04/x
  3. Step 3: Cross multiply
    111,399.95x = 153,729.83 × 63,001.04
  4. Step 4: Simplify right side
    111,399.95x = 9,685,138,557.88
  5. Step 5: Solve for x
    x = 9,685,138,557.88/111,399.95
  6. Step 6: Final answer
    x = 86,940.24

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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.