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Finding the Fourth Proportional to 47,139.88, 70,694.88 and 15,967.84

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Solution

The fourth proportional to 47,139.88, 70,694.88 and 15,967.84 is: 23,946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,139.88 : 70,694.88 = 15,967.84 : x
  2. Step 2: Convert to fraction form
    47,139.88/70,694.88 = 15,967.84/x
  3. Step 3: Cross multiply
    47,139.88x = 70,694.88 × 15,967.84
  4. Step 4: Simplify right side
    47,139.88x = 1,128,844,532.66
  5. Step 5: Solve for x
    x = 1,128,844,532.66/47,139.88
  6. Step 6: Final answer
    x = 23,946.70

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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.