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Finding the Fourth Proportional to 171,836.25, 257,409.47 and 87,593.01

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Solution

The fourth proportional to 171,836.25, 257,409.47 and 87,593.01 is: 131,213.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,836.25 : 257,409.47 = 87,593.01 : x
  2. Step 2: Convert to fraction form
    171,836.25/257,409.47 = 87,593.01/x
  3. Step 3: Cross multiply
    171,836.25x = 257,409.47 × 87,593.01
  4. Step 4: Simplify right side
    171,836.25x = 22,547,270,279.80
  5. Step 5: Solve for x
    x = 22,547,270,279.80/171,836.25
  6. Step 6: Final answer
    x = 131,213.70

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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.