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Finding the Fourth Proportional to 117,448.30, 176,115.04 and 81,926.64

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Solution

The fourth proportional to 117,448.30, 176,115.04 and 81,926.64 is: 122,849.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,448.30 : 176,115.04 = 81,926.64 : x
  2. Step 2: Convert to fraction form
    117,448.30/176,115.04 = 81,926.64/x
  3. Step 3: Cross multiply
    117,448.30x = 176,115.04 × 81,926.64
  4. Step 4: Simplify right side
    117,448.30x = 14,428,513,480.67
  5. Step 5: Solve for x
    x = 14,428,513,480.67/117,448.30
  6. Step 6: Final answer
    x = 122,849.91

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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.