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Finding the Fourth Proportional to 111,857.66, 154,328.82 and 63,451.61

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Solution

The fourth proportional to 111,857.66, 154,328.82 and 63,451.61 is: 87,543.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,857.66 : 154,328.82 = 63,451.61 : x
  2. Step 2: Convert to fraction form
    111,857.66/154,328.82 = 63,451.61/x
  3. Step 3: Cross multiply
    111,857.66x = 154,328.82 × 63,451.61
  4. Step 4: Simplify right side
    111,857.66x = 9,792,412,098.40
  5. Step 5: Solve for x
    x = 9,792,412,098.40/111,857.66
  6. Step 6: Final answer
    x = 87,543.51

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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.