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Finding the Fourth Proportional to 357,934.43, 536,889.28 and 91,697.55

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Solution

The fourth proportional to 357,934.43, 536,889.28 and 91,697.55 is: 137,543.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,934.43 : 536,889.28 = 91,697.55 : x
  2. Step 2: Convert to fraction form
    357,934.43/536,889.28 = 91,697.55/x
  3. Step 3: Cross multiply
    357,934.43x = 536,889.28 × 91,697.55
  4. Step 4: Simplify right side
    357,934.43x = 49,231,431,597.26
  5. Step 5: Solve for x
    x = 49,231,431,597.26/357,934.43
  6. Step 6: Final answer
    x = 137,543.16

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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.