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Finding the Fourth Proportional to 73,931.80, 110,967.30 and 38,896.60

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Solution

The fourth proportional to 73,931.80, 110,967.30 and 38,896.60 is: 58,381.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,931.80 : 110,967.30 = 38,896.60 : x
  2. Step 2: Convert to fraction form
    73,931.80/110,967.30 = 38,896.60/x
  3. Step 3: Cross multiply
    73,931.80x = 110,967.30 × 38,896.60
  4. Step 4: Simplify right side
    73,931.80x = 4,316,250,681.18
  5. Step 5: Solve for x
    x = 4,316,250,681.18/73,931.80
  6. Step 6: Final answer
    x = 58,381.52

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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.