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Finding the Fourth Proportional to 73,143.40, 100,932.42 and 41,312.20

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Solution

The fourth proportional to 73,143.40, 100,932.42 and 41,312.20 is: 57,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,143.40 : 100,932.42 = 41,312.20 : x
  2. Step 2: Convert to fraction form
    73,143.40/100,932.42 = 41,312.20/x
  3. Step 3: Cross multiply
    73,143.40x = 100,932.42 × 41,312.20
  4. Step 4: Simplify right side
    73,143.40x = 4,169,740,321.52
  5. Step 5: Solve for x
    x = 4,169,740,321.52/73,143.40
  6. Step 6: Final answer
    x = 57,007.75

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1.5x scale

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.