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Finding the Fourth Proportional to 177,805.20, 266,780.70 and 65,539.20

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Solution

The fourth proportional to 177,805.20, 266,780.70 and 65,539.20 is: 98,335.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,805.20 : 266,780.70 = 65,539.20 : x
  2. Step 2: Convert to fraction form
    177,805.20/266,780.70 = 65,539.20/x
  3. Step 3: Cross multiply
    177,805.20x = 266,780.70 × 65,539.20
  4. Step 4: Simplify right side
    177,805.20x = 17,484,593,653.44
  5. Step 5: Solve for x
    x = 17,484,593,653.44/177,805.20
  6. Step 6: Final answer
    x = 98,335.67

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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.