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Finding the Fourth Proportional to 527,882.15, 791,815.80 and 128,523.80

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Solution

The fourth proportional to 527,882.15, 791,815.80 and 128,523.80 is: 192,783.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,882.15 : 791,815.80 = 128,523.80 : x
  2. Step 2: Convert to fraction form
    527,882.15/791,815.80 = 128,523.80/x
  3. Step 3: Cross multiply
    527,882.15x = 791,815.80 × 128,523.80
  4. Step 4: Simplify right side
    527,882.15x = 101,767,175,516.04
  5. Step 5: Solve for x
    x = 101,767,175,516.04/527,882.15
  6. Step 6: Final answer
    x = 192,783.89

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1.5x scale

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.