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Finding the Fourth Proportional to 121,211.97, 181,617.47 and 61,966.14

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Solution

The fourth proportional to 121,211.97, 181,617.47 and 61,966.14 is: 92,846.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,211.97 : 181,617.47 = 61,966.14 : x
  2. Step 2: Convert to fraction form
    121,211.97/181,617.47 = 61,966.14/x
  3. Step 3: Cross multiply
    121,211.97x = 181,617.47 × 61,966.14
  4. Step 4: Simplify right side
    121,211.97x = 11,254,133,572.47
  5. Step 5: Solve for x
    x = 11,254,133,572.47/121,211.97
  6. Step 6: Final answer
    x = 92,846.72

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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.