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Finding the Fourth Proportional to 519,838.80, 779,758.20 and 270,488.40

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Solution

The fourth proportional to 519,838.80, 779,758.20 and 270,488.40 is: 405,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,838.80 : 779,758.20 = 270,488.40 : x
  2. Step 2: Convert to fraction form
    519,838.80/779,758.20 = 270,488.40/x
  3. Step 3: Cross multiply
    519,838.80x = 779,758.20 × 270,488.40
  4. Step 4: Simplify right side
    519,838.80x = 210,915,547,904.88
  5. Step 5: Solve for x
    x = 210,915,547,904.88/519,838.80
  6. Step 6: Final answer
    x = 405,732.60

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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.