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Finding the Fourth Proportional to 53,791.82, 74,223.70 and 29,915.30

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Solution

The fourth proportional to 53,791.82, 74,223.70 and 29,915.30 is: 41,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,791.82 : 74,223.70 = 29,915.30 : x
  2. Step 2: Convert to fraction form
    53,791.82/74,223.70 = 29,915.30/x
  3. Step 3: Cross multiply
    53,791.82x = 74,223.70 × 29,915.30
  4. Step 4: Simplify right side
    53,791.82x = 2,220,424,363.38
  5. Step 5: Solve for x
    x = 2,220,424,363.38/53,791.82
  6. Step 6: Final answer
    x = 41,278.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.