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Finding the Fourth Proportional to 38,693.91, 53,408.67 and 22,787.58

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Solution

The fourth proportional to 38,693.91, 53,408.67 and 22,787.58 is: 31,453.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,693.91 : 53,408.67 = 22,787.58 : x
  2. Step 2: Convert to fraction form
    38,693.91/53,408.67 = 22,787.58/x
  3. Step 3: Cross multiply
    38,693.91x = 53,408.67 × 22,787.58
  4. Step 4: Simplify right side
    38,693.91x = 1,217,054,340.32
  5. Step 5: Solve for x
    x = 1,217,054,340.32/38,693.91
  6. Step 6: Final answer
    x = 31,453.38

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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.