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Finding the Fourth Proportional to 539,766.10, 809,649.15 and 165,789.10

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Solution

The fourth proportional to 539,766.10, 809,649.15 and 165,789.10 is: 248,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,766.10 : 809,649.15 = 165,789.10 : x
  2. Step 2: Convert to fraction form
    539,766.10/809,649.15 = 165,789.10/x
  3. Step 3: Cross multiply
    539,766.10x = 809,649.15 × 165,789.10
  4. Step 4: Simplify right side
    539,766.10x = 134,231,003,894.27
  5. Step 5: Solve for x
    x = 134,231,003,894.27/539,766.10
  6. Step 6: Final answer
    x = 248,683.65

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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.