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Finding the Fourth Proportional to 578,774.40, 868,161.60 and 410,812.80

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Solution

The fourth proportional to 578,774.40, 868,161.60 and 410,812.80 is: 616,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,774.40 : 868,161.60 = 410,812.80 : x
  2. Step 2: Convert to fraction form
    578,774.40/868,161.60 = 410,812.80/x
  3. Step 3: Cross multiply
    578,774.40x = 868,161.60 × 410,812.80
  4. Step 4: Simplify right side
    578,774.40x = 356,651,897,748.48
  5. Step 5: Solve for x
    x = 356,651,897,748.48/578,774.40
  6. Step 6: Final answer
    x = 616,219.20

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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.