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Finding the Fourth Proportional to 359,126.57, 538,699.84 and 89,243.82

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Solution

The fourth proportional to 359,126.57, 538,699.84 and 89,243.82 is: 133,868.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,126.57 : 538,699.84 = 89,243.82 : x
  2. Step 2: Convert to fraction form
    359,126.57/538,699.84 = 89,243.82/x
  3. Step 3: Cross multiply
    359,126.57x = 538,699.84 × 89,243.82
  4. Step 4: Simplify right side
    359,126.57x = 48,075,631,331.88
  5. Step 5: Solve for x
    x = 48,075,631,331.88/359,126.57
  6. Step 6: Final answer
    x = 133,868.21

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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.