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Finding the Fourth Proportional to 111,195.64, 153,448.90 and 60,207.09

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Solution

The fourth proportional to 111,195.64, 153,448.90 and 60,207.09 is: 83,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,195.64 : 153,448.90 = 60,207.09 : x
  2. Step 2: Convert to fraction form
    111,195.64/153,448.90 = 60,207.09/x
  3. Step 3: Cross multiply
    111,195.64x = 153,448.90 × 60,207.09
  4. Step 4: Simplify right side
    111,195.64x = 9,238,711,732.70
  5. Step 5: Solve for x
    x = 9,238,711,732.70/111,195.64
  6. Step 6: Final answer
    x = 83,085.20

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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.