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Finding the Fourth Proportional to 97,381.32, 145,687.64 and 73,756.92

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Solution

The fourth proportional to 97,381.32, 145,687.64 and 73,756.92 is: 110,344.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,381.32 : 145,687.64 = 73,756.92 : x
  2. Step 2: Convert to fraction form
    97,381.32/145,687.64 = 73,756.92/x
  3. Step 3: Cross multiply
    97,381.32x = 145,687.64 × 73,756.92
  4. Step 4: Simplify right side
    97,381.32x = 10,745,471,608.47
  5. Step 5: Solve for x
    x = 10,745,471,608.47/97,381.32
  6. Step 6: Final answer
    x = 110,344.28

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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.