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Finding the Fourth Proportional to 357,780.44, 536,669.75 and 91,540.53

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Solution

The fourth proportional to 357,780.44, 536,669.75 and 91,540.53 is: 137,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,780.44 : 536,669.75 = 91,540.53 : x
  2. Step 2: Convert to fraction form
    357,780.44/536,669.75 = 91,540.53/x
  3. Step 3: Cross multiply
    357,780.44x = 536,669.75 × 91,540.53
  4. Step 4: Simplify right side
    357,780.44x = 49,127,033,578.82
  5. Step 5: Solve for x
    x = 49,127,033,578.82/357,780.44
  6. Step 6: Final answer
    x = 137,310.56

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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.