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Finding the Fourth Proportional to 83,855.21, 115,691.90 and 47,552.76

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Solution

The fourth proportional to 83,855.21, 115,691.90 and 47,552.76 is: 65,606.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,855.21 : 115,691.90 = 47,552.76 : x
  2. Step 2: Convert to fraction form
    83,855.21/115,691.90 = 47,552.76/x
  3. Step 3: Cross multiply
    83,855.21x = 115,691.90 × 47,552.76
  4. Step 4: Simplify right side
    83,855.21x = 5,501,468,916.88
  5. Step 5: Solve for x
    x = 5,501,468,916.88/83,855.21
  6. Step 6: Final answer
    x = 65,606.77

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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.