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Finding the Fourth Proportional to 131,367.88, 197,048.80 and 42,621.56

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Solution

The fourth proportional to 131,367.88, 197,048.80 and 42,621.56 is: 63,931.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,367.88 : 197,048.80 = 42,621.56 : x
  2. Step 2: Convert to fraction form
    131,367.88/197,048.80 = 42,621.56/x
  3. Step 3: Cross multiply
    131,367.88x = 197,048.80 × 42,621.56
  4. Step 4: Simplify right side
    131,367.88x = 8,398,527,252.13
  5. Step 5: Solve for x
    x = 8,398,527,252.13/131,367.88
  6. Step 6: Final answer
    x = 63,931.36

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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.