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Finding the Fourth Proportional to 519,693.40, 779,540.10 and 204,045.40

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Solution

The fourth proportional to 519,693.40, 779,540.10 and 204,045.40 is: 306,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,693.40 : 779,540.10 = 204,045.40 : x
  2. Step 2: Convert to fraction form
    519,693.40/779,540.10 = 204,045.40/x
  3. Step 3: Cross multiply
    519,693.40x = 779,540.10 × 204,045.40
  4. Step 4: Simplify right side
    519,693.40x = 159,061,571,520.54
  5. Step 5: Solve for x
    x = 159,061,571,520.54/519,693.40
  6. Step 6: Final answer
    x = 306,068.10

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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.