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Finding the Fourth Proportional to 79,269.45, 109,388.93 and 43,458.68

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Solution

The fourth proportional to 79,269.45, 109,388.93 and 43,458.68 is: 59,971.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,269.45 : 109,388.93 = 43,458.68 : x
  2. Step 2: Convert to fraction form
    79,269.45/109,388.93 = 43,458.68/x
  3. Step 3: Cross multiply
    79,269.45x = 109,388.93 × 43,458.68
  4. Step 4: Simplify right side
    79,269.45x = 4,753,897,740.17
  5. Step 5: Solve for x
    x = 4,753,897,740.17/79,269.45
  6. Step 6: Final answer
    x = 59,971.37

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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.