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Finding the Fourth Proportional to 114,805.28, 172,209.68 and 43,731.87

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Solution

The fourth proportional to 114,805.28, 172,209.68 and 43,731.87 is: 65,598.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,805.28 : 172,209.68 = 43,731.87 : x
  2. Step 2: Convert to fraction form
    114,805.28/172,209.68 = 43,731.87/x
  3. Step 3: Cross multiply
    114,805.28x = 172,209.68 × 43,731.87
  4. Step 4: Simplify right side
    114,805.28x = 7,531,050,638.05
  5. Step 5: Solve for x
    x = 7,531,050,638.05/114,805.28
  6. Step 6: Final answer
    x = 65,598.47

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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.