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Finding the Fourth Proportional to 92,548.98, 138,801.60 and 53,085.78

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Solution

The fourth proportional to 92,548.98, 138,801.60 and 53,085.78 is: 79,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,548.98 : 138,801.60 = 53,085.78 : x
  2. Step 2: Convert to fraction form
    92,548.98/138,801.60 = 53,085.78/x
  3. Step 3: Cross multiply
    92,548.98x = 138,801.60 × 53,085.78
  4. Step 4: Simplify right side
    92,548.98x = 7,368,391,201.25
  5. Step 5: Solve for x
    x = 7,368,391,201.25/92,548.98
  6. Step 6: Final answer
    x = 79,616.13

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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.