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Finding the Fourth Proportional to 519,217.75, 778,826.63 and 145,240.75

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Solution

The fourth proportional to 519,217.75, 778,826.63 and 145,240.75 is: 217,861.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,217.75 : 778,826.63 = 145,240.75 : x
  2. Step 2: Convert to fraction form
    519,217.75/778,826.63 = 145,240.75/x
  3. Step 3: Cross multiply
    519,217.75x = 778,826.63 × 145,240.75
  4. Step 4: Simplify right side
    519,217.75x = 113,117,363,861.17
  5. Step 5: Solve for x
    x = 113,117,363,861.17/519,217.75
  6. Step 6: Final answer
    x = 217,861.13

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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.