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Finding the Fourth Proportional to 73,309.91, 109,973.90 and 25,915.22

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Solution

The fourth proportional to 73,309.91, 109,973.90 and 25,915.22 is: 38,876.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,309.91 : 109,973.90 = 25,915.22 : x
  2. Step 2: Convert to fraction form
    73,309.91/109,973.90 = 25,915.22/x
  3. Step 3: Cross multiply
    73,309.91x = 109,973.90 × 25,915.22
  4. Step 4: Simplify right side
    73,309.91x = 2,849,997,740.08
  5. Step 5: Solve for x
    x = 2,849,997,740.08/73,309.91
  6. Step 6: Final answer
    x = 38,876.03

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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.