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Finding the Fourth Proportional to 72,878.79, 109,071.29 and 44,816.62

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Solution

The fourth proportional to 72,878.79, 109,071.29 and 44,816.62 is: 67,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,878.79 : 109,071.29 = 44,816.62 : x
  2. Step 2: Convert to fraction form
    72,878.79/109,071.29 = 44,816.62/x
  3. Step 3: Cross multiply
    72,878.79x = 109,071.29 × 44,816.62
  4. Step 4: Simplify right side
    72,878.79x = 4,888,206,556.84
  5. Step 5: Solve for x
    x = 4,888,206,556.84/72,878.79
  6. Step 6: Final answer
    x = 67,073.10

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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.