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Finding the Fourth Proportional to 578,987.23, 868,545.01 and 199,865.01

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Solution

The fourth proportional to 578,987.23, 868,545.01 and 199,865.01 is: 299,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,987.23 : 868,545.01 = 199,865.01 : x
  2. Step 2: Convert to fraction form
    578,987.23/868,545.01 = 199,865.01/x
  3. Step 3: Cross multiply
    578,987.23x = 868,545.01 × 199,865.01
  4. Step 4: Simplify right side
    578,987.23x = 173,591,757,109.10
  5. Step 5: Solve for x
    x = 173,591,757,109.10/578,987.23
  6. Step 6: Final answer
    x = 299,819.66

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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.