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Finding the Fourth Proportional to 125,642.34, 173,207.97 and 99,923.22

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Solution

The fourth proportional to 125,642.34, 173,207.97 and 99,923.22 is: 137,752.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,642.34 : 173,207.97 = 99,923.22 : x
  2. Step 2: Convert to fraction form
    125,642.34/173,207.97 = 99,923.22/x
  3. Step 3: Cross multiply
    125,642.34x = 173,207.97 × 99,923.22
  4. Step 4: Simplify right side
    125,642.34x = 17,307,498,092.06
  5. Step 5: Solve for x
    x = 17,307,498,092.06/125,642.34
  6. Step 6: Final answer
    x = 137,752.12

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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.