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Finding the Fourth Proportional to 357,931.32, 536,884.56 and 91,694.44

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Solution

The fourth proportional to 357,931.32, 536,884.56 and 91,694.44 is: 137,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,931.32 : 536,884.56 = 91,694.44 : x
  2. Step 2: Convert to fraction form
    357,931.32/536,884.56 = 91,694.44/x
  3. Step 3: Cross multiply
    357,931.32x = 536,884.56 × 91,694.44
  4. Step 4: Simplify right side
    357,931.32x = 49,229,329,073.85
  5. Step 5: Solve for x
    x = 49,229,329,073.85/357,931.32
  6. Step 6: Final answer
    x = 137,538.48

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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.