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Finding the Fourth Proportional to 47,959.40, 71,932.62 and 12,901.16

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Solution

The fourth proportional to 47,959.40, 71,932.62 and 12,901.16 is: 19,350.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,959.40 : 71,932.62 = 12,901.16 : x
  2. Step 2: Convert to fraction form
    47,959.40/71,932.62 = 12,901.16/x
  3. Step 3: Cross multiply
    47,959.40x = 71,932.62 × 12,901.16
  4. Step 4: Simplify right side
    47,959.40x = 928,014,239.84
  5. Step 5: Solve for x
    x = 928,014,239.84/47,959.40
  6. Step 6: Final answer
    x = 19,350.00

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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.