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Finding the Fourth Proportional to 579,403.70, 869,105.55 and 501,643.70

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Solution

The fourth proportional to 579,403.70, 869,105.55 and 501,643.70 is: 752,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,403.70 : 869,105.55 = 501,643.70 : x
  2. Step 2: Convert to fraction form
    579,403.70/869,105.55 = 501,643.70/x
  3. Step 3: Cross multiply
    579,403.70x = 869,105.55 × 501,643.70
  4. Step 4: Simplify right side
    579,403.70x = 435,981,323,792.54
  5. Step 5: Solve for x
    x = 435,981,323,792.54/579,403.70
  6. Step 6: Final answer
    x = 752,465.55

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Half scale
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Double scale
Find fourth proportional to 579,404.70, 869,107.05 and 501,644.70
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.