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Finding the Fourth Proportional to 327,375.51, 491,061.87 and 90,717.54

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Solution

The fourth proportional to 327,375.51, 491,061.87 and 90,717.54 is: 136,075.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,375.51 : 491,061.87 = 90,717.54 : x
  2. Step 2: Convert to fraction form
    327,375.51/491,061.87 = 90,717.54/x
  3. Step 3: Cross multiply
    327,375.51x = 491,061.87 × 90,717.54
  4. Step 4: Simplify right side
    327,375.51x = 44,547,924,834.20
  5. Step 5: Solve for x
    x = 44,547,924,834.20/327,375.51
  6. Step 6: Final answer
    x = 136,075.92

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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.