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Finding the Fourth Proportional to 359,235.90, 538,853.76 and 122,578.56

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Solution

The fourth proportional to 359,235.90, 538,853.76 and 122,578.56 is: 183,867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,235.90 : 538,853.76 = 122,578.56 : x
  2. Step 2: Convert to fraction form
    359,235.90/538,853.76 = 122,578.56/x
  3. Step 3: Cross multiply
    359,235.90x = 538,853.76 × 122,578.56
  4. Step 4: Simplify right side
    359,235.90x = 66,051,917,951.39
  5. Step 5: Solve for x
    x = 66,051,917,951.39/359,235.90
  6. Step 6: Final answer
    x = 183,867.81

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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.