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Finding the Fourth Proportional to 99,266, 136,987.08 and 54,554

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Solution

The fourth proportional to 99,266, 136,987.08 and 54,554 is: 75,284.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,266 : 136,987.08 = 54,554 : x
  2. Step 2: Convert to fraction form
    99,266/136,987.08 = 54,554/x
  3. Step 3: Cross multiply
    99,266x = 136,987.08 × 54,554
  4. Step 4: Simplify right side
    99,266x = 7,473,193,162.32
  5. Step 5: Solve for x
    x = 7,473,193,162.32/99,266
  6. Step 6: Final answer
    x = 75,284.52

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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.