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Finding the Fourth Proportional to 73,031.52, 100,720.41 and 47,528.70

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Solution

The fourth proportional to 73,031.52, 100,720.41 and 47,528.70 is: 65,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,031.52 : 100,720.41 = 47,528.70 : x
  2. Step 2: Convert to fraction form
    73,031.52/100,720.41 = 47,528.70/x
  3. Step 3: Cross multiply
    73,031.52x = 100,720.41 × 47,528.70
  4. Step 4: Simplify right side
    73,031.52x = 4,787,110,150.77
  5. Step 5: Solve for x
    x = 4,787,110,150.77/73,031.52
  6. Step 6: Final answer
    x = 65,548.55

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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.