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Finding the Fourth Proportional to 519,727.20, 779,590.80 and 295,000.80

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Solution

The fourth proportional to 519,727.20, 779,590.80 and 295,000.80 is: 442,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,727.20 : 779,590.80 = 295,000.80 : x
  2. Step 2: Convert to fraction form
    519,727.20/779,590.80 = 295,000.80/x
  3. Step 3: Cross multiply
    519,727.20x = 779,590.80 × 295,000.80
  4. Step 4: Simplify right side
    519,727.20x = 229,979,909,672.64
  5. Step 5: Solve for x
    x = 229,979,909,672.64/519,727.20
  6. Step 6: Final answer
    x = 442,501.20

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Half scale
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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.