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Finding the Fourth Proportional to 52,160.68, 71,990.94 and 30,951.64

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Solution

The fourth proportional to 52,160.68, 71,990.94 and 30,951.64 is: 42,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,160.68 : 71,990.94 = 30,951.64 : x
  2. Step 2: Convert to fraction form
    52,160.68/71,990.94 = 30,951.64/x
  3. Step 3: Cross multiply
    52,160.68x = 71,990.94 × 30,951.64
  4. Step 4: Simplify right side
    52,160.68x = 2,228,237,658.14
  5. Step 5: Solve for x
    x = 2,228,237,658.14/52,160.68
  6. Step 6: Final answer
    x = 42,718.72

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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.