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Finding the Fourth Proportional to 107,978.16, 149,010.08 and 60,230.28

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Solution

The fourth proportional to 107,978.16, 149,010.08 and 60,230.28 is: 83,117.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,978.16 : 149,010.08 = 60,230.28 : x
  2. Step 2: Convert to fraction form
    107,978.16/149,010.08 = 60,230.28/x
  3. Step 3: Cross multiply
    107,978.16x = 149,010.08 × 60,230.28
  4. Step 4: Simplify right side
    107,978.16x = 8,974,918,841.22
  5. Step 5: Solve for x
    x = 8,974,918,841.22/107,978.16
  6. Step 6: Final answer
    x = 83,117.91

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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.