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Finding the Fourth Proportional to 111,537.89, 153,906.05 and 63,782.02

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Solution

The fourth proportional to 111,537.89, 153,906.05 and 63,782.02 is: 88,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,537.89 : 153,906.05 = 63,782.02 : x
  2. Step 2: Convert to fraction form
    111,537.89/153,906.05 = 63,782.02/x
  3. Step 3: Cross multiply
    111,537.89x = 153,906.05 × 63,782.02
  4. Step 4: Simplify right side
    111,537.89x = 9,816,438,335.03
  5. Step 5: Solve for x
    x = 9,816,438,335.03/111,537.89
  6. Step 6: Final answer
    x = 88,009.89

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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.