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Finding the Fourth Proportional to 527,826.60, 791,728.82 and 128,469.60

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Solution

The fourth proportional to 527,826.60, 791,728.82 and 128,469.60 is: 192,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,826.60 : 791,728.82 = 128,469.60 : x
  2. Step 2: Convert to fraction form
    527,826.60/791,728.82 = 128,469.60/x
  3. Step 3: Cross multiply
    527,826.60x = 791,728.82 × 128,469.60
  4. Step 4: Simplify right side
    527,826.60x = 101,713,084,813.87
  5. Step 5: Solve for x
    x = 101,713,084,813.87/527,826.60
  6. Step 6: Final answer
    x = 192,701.70

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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.