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Finding the Fourth Proportional to 124,599.90, 171,948.11 and 68,011.28

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Solution

The fourth proportional to 124,599.90, 171,948.11 and 68,011.28 is: 93,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,599.90 : 171,948.11 = 68,011.28 : x
  2. Step 2: Convert to fraction form
    124,599.90/171,948.11 = 68,011.28/x
  3. Step 3: Cross multiply
    124,599.90x = 171,948.11 × 68,011.28
  4. Step 4: Simplify right side
    124,599.90x = 11,694,411,054.68
  5. Step 5: Solve for x
    x = 11,694,411,054.68/124,599.90
  6. Step 6: Final answer
    x = 93,855.70

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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.