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Finding the Fourth Proportional to 111,800.80, 154,276.68 and 61,503.04

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Solution

The fourth proportional to 111,800.80, 154,276.68 and 61,503.04 is: 84,869.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,800.80 : 154,276.68 = 61,503.04 : x
  2. Step 2: Convert to fraction form
    111,800.80/154,276.68 = 61,503.04/x
  3. Step 3: Cross multiply
    111,800.80x = 154,276.68 × 61,503.04
  4. Step 4: Simplify right side
    111,800.80x = 9,488,484,821.11
  5. Step 5: Solve for x
    x = 9,488,484,821.11/111,800.80
  6. Step 6: Final answer
    x = 84,869.56

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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.