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Finding the Fourth Proportional to 92,587.92, 138,888.42 and 45,828.24

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Solution

The fourth proportional to 92,587.92, 138,888.42 and 45,828.24 is: 68,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,587.92 : 138,888.42 = 45,828.24 : x
  2. Step 2: Convert to fraction form
    92,587.92/138,888.42 = 45,828.24/x
  3. Step 3: Cross multiply
    92,587.92x = 138,888.42 × 45,828.24
  4. Step 4: Simplify right side
    92,587.92x = 6,365,011,844.98
  5. Step 5: Solve for x
    x = 6,365,011,844.98/92,587.92
  6. Step 6: Final answer
    x = 68,745.60

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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.