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Finding the Fourth Proportional to 106,119.49, 158,978.68 and 62,712.93

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Solution

The fourth proportional to 106,119.49, 158,978.68 and 62,712.93 is: 93,950.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,119.49 : 158,978.68 = 62,712.93 : x
  2. Step 2: Convert to fraction form
    106,119.49/158,978.68 = 62,712.93/x
  3. Step 3: Cross multiply
    106,119.49x = 158,978.68 × 62,712.93
  4. Step 4: Simplify right side
    106,119.49x = 9,970,018,830.33
  5. Step 5: Solve for x
    x = 9,970,018,830.33/106,119.49
  6. Step 6: Final answer
    x = 93,950.87

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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.