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Finding the Fourth Proportional to 70,938.88, 97,893.13 and 38,672.83

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Solution

The fourth proportional to 70,938.88, 97,893.13 and 38,672.83 is: 53,367.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,938.88 : 97,893.13 = 38,672.83 : x
  2. Step 2: Convert to fraction form
    70,938.88/97,893.13 = 38,672.83/x
  3. Step 3: Cross multiply
    70,938.88x = 97,893.13 × 38,672.83
  4. Step 4: Simplify right side
    70,938.88x = 3,785,804,374.66
  5. Step 5: Solve for x
    x = 3,785,804,374.66/70,938.88
  6. Step 6: Final answer
    x = 53,367.13

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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.