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Finding the Fourth Proportional to 61,288.56, 91,938.14 and 16,915.32

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Solution

The fourth proportional to 61,288.56, 91,938.14 and 16,915.32 is: 25,374.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,288.56 : 91,938.14 = 16,915.32 : x
  2. Step 2: Convert to fraction form
    61,288.56/91,938.14 = 16,915.32/x
  3. Step 3: Cross multiply
    61,288.56x = 91,938.14 × 16,915.32
  4. Step 4: Simplify right side
    61,288.56x = 1,555,163,058.30
  5. Step 5: Solve for x
    x = 1,555,163,058.30/61,288.56
  6. Step 6: Final answer
    x = 25,374.44

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1.5x scale

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.