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Finding the Fourth Proportional to 107,492.80, 161,044.80 and 91,940.80

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Solution

The fourth proportional to 107,492.80, 161,044.80 and 91,940.80 is: 137,744.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,492.80 : 161,044.80 = 91,940.80 : x
  2. Step 2: Convert to fraction form
    107,492.80/161,044.80 = 91,940.80/x
  3. Step 3: Cross multiply
    107,492.80x = 161,044.80 × 91,940.80
  4. Step 4: Simplify right side
    107,492.80x = 14,806,587,747.84
  5. Step 5: Solve for x
    x = 14,806,587,747.84/107,492.80
  6. Step 6: Final answer
    x = 137,744.93

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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.