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Finding the Fourth Proportional to 579,946.40, 869,919.60 and 534,456.80

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Solution

The fourth proportional to 579,946.40, 869,919.60 and 534,456.80 is: 801,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,946.40 : 869,919.60 = 534,456.80 : x
  2. Step 2: Convert to fraction form
    579,946.40/869,919.60 = 534,456.80/x
  3. Step 3: Cross multiply
    579,946.40x = 869,919.60 × 534,456.80
  4. Step 4: Simplify right side
    579,946.40x = 464,934,445,673.28
  5. Step 5: Solve for x
    x = 464,934,445,673.28/579,946.40
  6. Step 6: Final answer
    x = 801,685.20

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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.