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Finding the Fourth Proportional to 72,648.90, 100,254.20 and 44,354.57

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Solution

The fourth proportional to 72,648.90, 100,254.20 and 44,354.57 is: 61,208.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,648.90 : 100,254.20 = 44,354.57 : x
  2. Step 2: Convert to fraction form
    72,648.90/100,254.20 = 44,354.57/x
  3. Step 3: Cross multiply
    72,648.90x = 100,254.20 × 44,354.57
  4. Step 4: Simplify right side
    72,648.90x = 4,446,731,208.65
  5. Step 5: Solve for x
    x = 4,446,731,208.65/72,648.90
  6. Step 6: Final answer
    x = 61,208.51

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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.