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Finding the Fourth Proportional to 579,324.40, 868,986.60 and 528,002.80

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Solution

The fourth proportional to 579,324.40, 868,986.60 and 528,002.80 is: 792,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,324.40 : 868,986.60 = 528,002.80 : x
  2. Step 2: Convert to fraction form
    579,324.40/868,986.60 = 528,002.80/x
  3. Step 3: Cross multiply
    579,324.40x = 868,986.60 × 528,002.80
  4. Step 4: Simplify right side
    579,324.40x = 458,827,357,962.48
  5. Step 5: Solve for x
    x = 458,827,357,962.48/579,324.40
  6. Step 6: Final answer
    x = 792,004.20

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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.