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Finding the Fourth Proportional to 519,882.10, 779,823.15 and 164,923.90

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Solution

The fourth proportional to 519,882.10, 779,823.15 and 164,923.90 is: 247,385.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,882.10 : 779,823.15 = 164,923.90 : x
  2. Step 2: Convert to fraction form
    519,882.10/779,823.15 = 164,923.90/x
  3. Step 3: Cross multiply
    519,882.10x = 779,823.15 × 164,923.90
  4. Step 4: Simplify right side
    519,882.10x = 128,611,475,208.29
  5. Step 5: Solve for x
    x = 128,611,475,208.29/519,882.10
  6. Step 6: Final answer
    x = 247,385.85

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Double scale
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Similar ratio
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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.