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Finding the Fourth Proportional to 327,374.98, 491,061.12 and 90,716.98

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Solution

The fourth proportional to 327,374.98, 491,061.12 and 90,716.98 is: 136,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,374.98 : 491,061.12 = 90,716.98 : x
  2. Step 2: Convert to fraction form
    327,374.98/491,061.12 = 90,716.98/x
  3. Step 3: Cross multiply
    327,374.98x = 491,061.12 × 90,716.98
  4. Step 4: Simplify right side
    327,374.98x = 44,547,581,801.82
  5. Step 5: Solve for x
    x = 44,547,581,801.82/327,374.98
  6. Step 6: Final answer
    x = 136,075.10

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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.