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Finding the Fourth Proportional to 79,525.65, 109,742.61 and 43,715.40

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Solution

The fourth proportional to 79,525.65, 109,742.61 and 43,715.40 is: 60,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,525.65 : 109,742.61 = 43,715.40 : x
  2. Step 2: Convert to fraction form
    79,525.65/109,742.61 = 43,715.40/x
  3. Step 3: Cross multiply
    79,525.65x = 109,742.61 × 43,715.40
  4. Step 4: Simplify right side
    79,525.65x = 4,797,441,929.26
  5. Step 5: Solve for x
    x = 4,797,441,929.26/79,525.65
  6. Step 6: Final answer
    x = 60,325.72

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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.