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Finding the Fourth Proportional to 539,082.20, 808,623.30 and 528,584.60

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Solution

The fourth proportional to 539,082.20, 808,623.30 and 528,584.60 is: 792,876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,082.20 : 808,623.30 = 528,584.60 : x
  2. Step 2: Convert to fraction form
    539,082.20/808,623.30 = 528,584.60/x
  3. Step 3: Cross multiply
    539,082.20x = 808,623.30 × 528,584.60
  4. Step 4: Simplify right side
    539,082.20x = 427,425,823,581.18
  5. Step 5: Solve for x
    x = 427,425,823,581.18/539,082.20
  6. Step 6: Final answer
    x = 792,876.90

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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.