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Finding the Fourth Proportional to 359,859.40, 539,529.90 and 202,136.20

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Solution

The fourth proportional to 359,859.40, 539,529.90 and 202,136.20 is: 303,058.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,859.40 : 539,529.90 = 202,136.20 : x
  2. Step 2: Convert to fraction form
    359,859.40/539,529.90 = 202,136.20/x
  3. Step 3: Cross multiply
    359,859.40x = 539,529.90 × 202,136.20
  4. Step 4: Simplify right side
    359,859.40x = 109,058,523,772.38
  5. Step 5: Solve for x
    x = 109,058,523,772.38/359,859.40
  6. Step 6: Final answer
    x = 303,058.71

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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.