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Finding the Fourth Proportional to 519,885.15, 779,827.73 and 519,885.15

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Solution

The fourth proportional to 519,885.15, 779,827.73 and 519,885.15 is: 779,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,885.15 : 779,827.73 = 519,885.15 : x
  2. Step 2: Convert to fraction form
    519,885.15/779,827.73 = 519,885.15/x
  3. Step 3: Cross multiply
    519,885.15x = 779,827.73 × 519,885.15
  4. Step 4: Simplify right side
    519,885.15x = 405,420,856,385.21
  5. Step 5: Solve for x
    x = 405,420,856,385.21/519,885.15
  6. Step 6: Final answer
    x = 779,827.73

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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.