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Finding the Fourth Proportional to 526,758.38, 726,928.49 and 285,040.95

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Solution

The fourth proportional to 526,758.38, 726,928.49 and 285,040.95 is: 393,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,758.38 : 726,928.49 = 285,040.95 : x
  2. Step 2: Convert to fraction form
    526,758.38/726,928.49 = 285,040.95/x
  3. Step 3: Cross multiply
    526,758.38x = 726,928.49 × 285,040.95
  4. Step 4: Simplify right side
    526,758.38x = 207,204,385,946.46
  5. Step 5: Solve for x
    x = 207,204,385,946.46/526,758.38
  6. Step 6: Final answer
    x = 393,357.55

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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.