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Finding the Fourth Proportional to 520,922.46, 779,252.10 and 393,616.38

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Solution

The fourth proportional to 520,922.46, 779,252.10 and 393,616.38 is: 588,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,922.46 : 779,252.10 = 393,616.38 : x
  2. Step 2: Convert to fraction form
    520,922.46/779,252.10 = 393,616.38/x
  3. Step 3: Cross multiply
    520,922.46x = 779,252.10 × 393,616.38
  4. Step 4: Simplify right side
    520,922.46x = 306,726,390,709.40
  5. Step 5: Solve for x
    x = 306,726,390,709.40/520,922.46
  6. Step 6: Final answer
    x = 588,813.91

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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.