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Finding the Fourth Proportional to 519,965.10, 779,947.65 and 253,896.30

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Solution

The fourth proportional to 519,965.10, 779,947.65 and 253,896.30 is: 380,844.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,965.10 : 779,947.65 = 253,896.30 : x
  2. Step 2: Convert to fraction form
    519,965.10/779,947.65 = 253,896.30/x
  3. Step 3: Cross multiply
    519,965.10x = 779,947.65 × 253,896.30
  4. Step 4: Simplify right side
    519,965.10x = 198,025,822,528.70
  5. Step 5: Solve for x
    x = 198,025,822,528.70/519,965.10
  6. Step 6: Final answer
    x = 380,844.45

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Double scale
Find fourth proportional to 519,966.10, 779,949.15 and 253,897.30
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.