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Finding the Fourth Proportional to 79,409.84, 109,585.79 and 43,602.17

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Solution

The fourth proportional to 79,409.84, 109,585.79 and 43,602.17 is: 60,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,409.84 : 109,585.79 = 43,602.17 : x
  2. Step 2: Convert to fraction form
    79,409.84/109,585.79 = 43,602.17/x
  3. Step 3: Cross multiply
    79,409.84x = 109,585.79 × 43,602.17
  4. Step 4: Simplify right side
    79,409.84x = 4,778,178,245.16
  5. Step 5: Solve for x
    x = 4,778,178,245.16/79,409.84
  6. Step 6: Final answer
    x = 60,171.11

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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.