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Finding the Fourth Proportional to 79,316.87, 109,474.88 and 62,055.18

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Solution

The fourth proportional to 79,316.87, 109,474.88 and 62,055.18 is: 85,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,316.87 : 109,474.88 = 62,055.18 : x
  2. Step 2: Convert to fraction form
    79,316.87/109,474.88 = 62,055.18/x
  3. Step 3: Cross multiply
    79,316.87x = 109,474.88 × 62,055.18
  4. Step 4: Simplify right side
    79,316.87x = 6,793,483,073.60
  5. Step 5: Solve for x
    x = 6,793,483,073.60/79,316.87
  6. Step 6: Final answer
    x = 85,649.92

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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.