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Finding the Fourth Proportional to 144,294.80, 198,997.89 and 90,584.81

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Solution

The fourth proportional to 144,294.80, 198,997.89 and 90,584.81 is: 124,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,294.80 : 198,997.89 = 90,584.81 : x
  2. Step 2: Convert to fraction form
    144,294.80/198,997.89 = 90,584.81/x
  3. Step 3: Cross multiply
    144,294.80x = 198,997.89 × 90,584.81
  4. Step 4: Simplify right side
    144,294.80x = 18,026,186,056.05
  5. Step 5: Solve for x
    x = 18,026,186,056.05/144,294.80
  6. Step 6: Final answer
    x = 124,926.10

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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.