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Finding the Fourth Proportional to 207,395.52, 311,142.48 and 67,153.92

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Solution

The fourth proportional to 207,395.52, 311,142.48 and 67,153.92 is: 100,746.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,395.52 : 311,142.48 = 67,153.92 : x
  2. Step 2: Convert to fraction form
    207,395.52/311,142.48 = 67,153.92/x
  3. Step 3: Cross multiply
    207,395.52x = 311,142.48 × 67,153.92
  4. Step 4: Simplify right side
    207,395.52x = 20,894,437,210.52
  5. Step 5: Solve for x
    x = 20,894,437,210.52/207,395.52
  6. Step 6: Final answer
    x = 100,746.81

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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.