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Finding the Fourth Proportional to 381,616.16, 526,603.90 and 211,836.92

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Solution

The fourth proportional to 381,616.16, 526,603.90 and 211,836.92 is: 292,320.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,616.16 : 526,603.90 = 211,836.92 : x
  2. Step 2: Convert to fraction form
    381,616.16/526,603.90 = 211,836.92/x
  3. Step 3: Cross multiply
    381,616.16x = 526,603.90 × 211,836.92
  4. Step 4: Simplify right side
    381,616.16x = 111,554,148,235.99
  5. Step 5: Solve for x
    x = 111,554,148,235.99/381,616.16
  6. Step 6: Final answer
    x = 292,320.29

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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.