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Finding the Fourth Proportional to 186,811.20, 280,216.80 and 171,064.80

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Solution

The fourth proportional to 186,811.20, 280,216.80 and 171,064.80 is: 256,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,811.20 : 280,216.80 = 171,064.80 : x
  2. Step 2: Convert to fraction form
    186,811.20/280,216.80 = 171,064.80/x
  3. Step 3: Cross multiply
    186,811.20x = 280,216.80 × 171,064.80
  4. Step 4: Simplify right side
    186,811.20x = 47,935,230,848.64
  5. Step 5: Solve for x
    x = 47,935,230,848.64/186,811.20
  6. Step 6: Final answer
    x = 256,597.20

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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.