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Finding the Fourth Proportional to 177,243.20, 265,864.80 and 130,011.20

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Solution

The fourth proportional to 177,243.20, 265,864.80 and 130,011.20 is: 195,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,243.20 : 265,864.80 = 130,011.20 : x
  2. Step 2: Convert to fraction form
    177,243.20/265,864.80 = 130,011.20/x
  3. Step 3: Cross multiply
    177,243.20x = 265,864.80 × 130,011.20
  4. Step 4: Simplify right side
    177,243.20x = 34,565,401,685.76
  5. Step 5: Solve for x
    x = 34,565,401,685.76/177,243.20
  6. Step 6: Final answer
    x = 195,016.80

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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.