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Finding the Fourth Proportional to 38,248.50, 52,787.88 and 21,481.50

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Solution

The fourth proportional to 38,248.50, 52,787.88 and 21,481.50 is: 29,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,248.50 : 52,787.88 = 21,481.50 : x
  2. Step 2: Convert to fraction form
    38,248.50/52,787.88 = 21,481.50/x
  3. Step 3: Cross multiply
    38,248.50x = 52,787.88 × 21,481.50
  4. Step 4: Simplify right side
    38,248.50x = 1,133,962,844.22
  5. Step 5: Solve for x
    x = 1,133,962,844.22/38,248.50
  6. Step 6: Final answer
    x = 29,647.25

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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.