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Finding the Fourth Proportional to 175,062.80, 261,989.40 and 104,992.40

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Solution

The fourth proportional to 175,062.80, 261,989.40 and 104,992.40 is: 157,125.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,062.80 : 261,989.40 = 104,992.40 : x
  2. Step 2: Convert to fraction form
    175,062.80/261,989.40 = 104,992.40/x
  3. Step 3: Cross multiply
    175,062.80x = 261,989.40 × 104,992.40
  4. Step 4: Simplify right side
    175,062.80x = 27,506,895,880.56
  5. Step 5: Solve for x
    x = 27,506,895,880.56/175,062.80
  6. Step 6: Final answer
    x = 157,125.88

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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.