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Finding the Fourth Proportional to 207,213.87, 310,821.41 and 170,031.23

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Solution

The fourth proportional to 207,213.87, 310,821.41 and 170,031.23 is: 255,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,213.87 : 310,821.41 = 170,031.23 : x
  2. Step 2: Convert to fraction form
    207,213.87/310,821.41 = 170,031.23/x
  3. Step 3: Cross multiply
    207,213.87x = 310,821.41 × 170,031.23
  4. Step 4: Simplify right side
    207,213.87x = 52,849,345,523.61
  5. Step 5: Solve for x
    x = 52,849,345,523.61/207,213.87
  6. Step 6: Final answer
    x = 255,047.34

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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.