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Finding the Fourth Proportional to 527,847.66, 791,764.74 and 128,488.77

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Solution

The fourth proportional to 527,847.66, 791,764.74 and 128,488.77 is: 192,731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,847.66 : 791,764.74 = 128,488.77 : x
  2. Step 2: Convert to fraction form
    527,847.66/791,764.74 = 128,488.77/x
  3. Step 3: Cross multiply
    527,847.66x = 791,764.74 × 128,488.77
  4. Step 4: Simplify right side
    527,847.66x = 101,732,877,571.97
  5. Step 5: Solve for x
    x = 101,732,877,571.97/527,847.66
  6. Step 6: Final answer
    x = 192,731.51

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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.