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Finding the Fourth Proportional to 73,176.80, 109,748.76 and 43,603.04

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Solution

The fourth proportional to 73,176.80, 109,748.76 and 43,603.04 is: 65,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,176.80 : 109,748.76 = 43,603.04 : x
  2. Step 2: Convert to fraction form
    73,176.80/109,748.76 = 43,603.04/x
  3. Step 3: Cross multiply
    73,176.80x = 109,748.76 × 43,603.04
  4. Step 4: Simplify right side
    73,176.80x = 4,785,379,572.23
  5. Step 5: Solve for x
    x = 4,785,379,572.23/73,176.80
  6. Step 6: Final answer
    x = 65,394.76

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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.