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Finding the Fourth Proportional to 47,532.80, 71,299.20 and 45,345.80

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Solution

The fourth proportional to 47,532.80, 71,299.20 and 45,345.80 is: 68,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,532.80 : 71,299.20 = 45,345.80 : x
  2. Step 2: Convert to fraction form
    47,532.80/71,299.20 = 45,345.80/x
  3. Step 3: Cross multiply
    47,532.80x = 71,299.20 × 45,345.80
  4. Step 4: Simplify right side
    47,532.80x = 3,233,119,263.36
  5. Step 5: Solve for x
    x = 3,233,119,263.36/47,532.80
  6. Step 6: Final answer
    x = 68,018.70

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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.