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Finding the Fourth Proportional to 92,438.64, 138,595.32 and 36,243.54

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Solution

The fourth proportional to 92,438.64, 138,595.32 and 36,243.54 is: 54,340.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,438.64 : 138,595.32 = 36,243.54 : x
  2. Step 2: Convert to fraction form
    92,438.64/138,595.32 = 36,243.54/x
  3. Step 3: Cross multiply
    92,438.64x = 138,595.32 × 36,243.54
  4. Step 4: Simplify right side
    92,438.64x = 5,023,185,024.23
  5. Step 5: Solve for x
    x = 5,023,185,024.23/92,438.64
  6. Step 6: Final answer
    x = 54,340.75

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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.