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Finding the Fourth Proportional to 359,377.72, 538,908.70 and 134,580.49

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Solution

The fourth proportional to 359,377.72, 538,908.70 and 134,580.49 is: 201,811.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,377.72 : 538,908.70 = 134,580.49 : x
  2. Step 2: Convert to fraction form
    359,377.72/538,908.70 = 134,580.49/x
  3. Step 3: Cross multiply
    359,377.72x = 538,908.70 × 134,580.49
  4. Step 4: Simplify right side
    359,377.72x = 72,526,596,911.26
  5. Step 5: Solve for x
    x = 72,526,596,911.26/359,377.72
  6. Step 6: Final answer
    x = 201,811.61

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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.