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Finding the Fourth Proportional to 56,915.65, 85,365.44 and 35,791.28

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Solution

The fourth proportional to 56,915.65, 85,365.44 and 35,791.28 is: 53,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,915.65 : 85,365.44 = 35,791.28 : x
  2. Step 2: Convert to fraction form
    56,915.65/85,365.44 = 35,791.28/x
  3. Step 3: Cross multiply
    56,915.65x = 85,365.44 × 35,791.28
  4. Step 4: Simplify right side
    56,915.65x = 3,055,338,535.29
  5. Step 5: Solve for x
    x = 3,055,338,535.29/56,915.65
  6. Step 6: Final answer
    x = 53,681.87

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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.