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Finding the Fourth Proportional to 178,921.69, 246,909.17 and 98,347.49

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Solution

The fourth proportional to 178,921.69, 246,909.17 and 98,347.49 is: 135,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,921.69 : 246,909.17 = 98,347.49 : x
  2. Step 2: Convert to fraction form
    178,921.69/246,909.17 = 98,347.49/x
  3. Step 3: Cross multiply
    178,921.69x = 246,909.17 × 98,347.49
  4. Step 4: Simplify right side
    178,921.69x = 24,282,895,647.07
  5. Step 5: Solve for x
    x = 24,282,895,647.07/178,921.69
  6. Step 6: Final answer
    x = 135,718.01

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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.