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Finding the Fourth Proportional to 359,277.13, 539,002.26 and 134,639.55

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Solution

The fourth proportional to 359,277.13, 539,002.26 and 134,639.55 is: 201,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,277.13 : 539,002.26 = 134,639.55 : x
  2. Step 2: Convert to fraction form
    359,277.13/539,002.26 = 134,639.55/x
  3. Step 3: Cross multiply
    359,277.13x = 539,002.26 × 134,639.55
  4. Step 4: Simplify right side
    359,277.13x = 72,571,021,735.38
  5. Step 5: Solve for x
    x = 72,571,021,735.38/359,277.13
  6. Step 6: Final answer
    x = 201,991.77

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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.