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Finding the Fourth Proportional to 111,486, 153,850.92 and 61,184.88

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Solution

The fourth proportional to 111,486, 153,850.92 and 61,184.88 is: 84,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,486 : 153,850.92 = 61,184.88 : x
  2. Step 2: Convert to fraction form
    111,486/153,850.92 = 61,184.88/x
  3. Step 3: Cross multiply
    111,486x = 153,850.92 × 61,184.88
  4. Step 4: Simplify right side
    111,486x = 9,413,350,078.09
  5. Step 5: Solve for x
    x = 9,413,350,078.09/111,486
  6. Step 6: Final answer
    x = 84,435.27

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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.