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Finding the Fourth Proportional to 519,884.10, 779,826.15 and 253,815.30

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Solution

The fourth proportional to 519,884.10, 779,826.15 and 253,815.30 is: 380,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,884.10 : 779,826.15 = 253,815.30 : x
  2. Step 2: Convert to fraction form
    519,884.10/779,826.15 = 253,815.30/x
  3. Step 3: Cross multiply
    519,884.10x = 779,826.15 × 253,815.30
  4. Step 4: Simplify right side
    519,884.10x = 197,931,808,210.10
  5. Step 5: Solve for x
    x = 197,931,808,210.10/519,884.10
  6. Step 6: Final answer
    x = 380,722.95

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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.