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Finding the Fourth Proportional to 61,916.40, 92,881.08 and 38,523.60

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Solution

The fourth proportional to 61,916.40, 92,881.08 and 38,523.60 is: 57,789.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,916.40 : 92,881.08 = 38,523.60 : x
  2. Step 2: Convert to fraction form
    61,916.40/92,881.08 = 38,523.60/x
  3. Step 3: Cross multiply
    61,916.40x = 92,881.08 × 38,523.60
  4. Step 4: Simplify right side
    61,916.40x = 3,578,113,573.49
  5. Step 5: Solve for x
    x = 3,578,113,573.49/61,916.40
  6. Step 6: Final answer
    x = 57,789.43

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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.