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Finding the Fourth Proportional to 157,443.68, 236,087.76 and 68,658.68

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Solution

The fourth proportional to 157,443.68, 236,087.76 and 68,658.68 is: 102,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,443.68 : 236,087.76 = 68,658.68 : x
  2. Step 2: Convert to fraction form
    157,443.68/236,087.76 = 68,658.68/x
  3. Step 3: Cross multiply
    157,443.68x = 236,087.76 × 68,658.68
  4. Step 4: Simplify right side
    157,443.68x = 16,209,473,965.76
  5. Step 5: Solve for x
    x = 16,209,473,965.76/157,443.68
  6. Step 6: Final answer
    x = 102,954.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.