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Finding the Fourth Proportional to 220,788.90, 304,690.14 and 125,297.19

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Solution

The fourth proportional to 220,788.90, 304,690.14 and 125,297.19 is: 172,910.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,788.90 : 304,690.14 = 125,297.19 : x
  2. Step 2: Convert to fraction form
    220,788.90/304,690.14 = 125,297.19/x
  3. Step 3: Cross multiply
    220,788.90x = 304,690.14 × 125,297.19
  4. Step 4: Simplify right side
    220,788.90x = 38,176,818,362.71
  5. Step 5: Solve for x
    x = 38,176,818,362.71/220,788.90
  6. Step 6: Final answer
    x = 172,910.95

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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.