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Finding the Fourth Proportional to 359,385.81, 538,620.72 and 190,986.81

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Solution

The fourth proportional to 359,385.81, 538,620.72 and 190,986.81 is: 286,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,385.81 : 538,620.72 = 190,986.81 : x
  2. Step 2: Convert to fraction form
    359,385.81/538,620.72 = 190,986.81/x
  3. Step 3: Cross multiply
    359,385.81x = 538,620.72 × 190,986.81
  4. Step 4: Simplify right side
    359,385.81x = 102,869,453,112.70
  5. Step 5: Solve for x
    x = 102,869,453,112.70/359,385.81
  6. Step 6: Final answer
    x = 286,236.82

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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.