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Finding the Fourth Proportional to 313,632.76, 432,839.56 and 177,709.92

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Solution

The fourth proportional to 313,632.76, 432,839.56 and 177,709.92 is: 245,254.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,632.76 : 432,839.56 = 177,709.92 : x
  2. Step 2: Convert to fraction form
    313,632.76/432,839.56 = 177,709.92/x
  3. Step 3: Cross multiply
    313,632.76x = 432,839.56 × 177,709.92
  4. Step 4: Simplify right side
    313,632.76x = 76,919,883,580.44
  5. Step 5: Solve for x
    x = 76,919,883,580.44/313,632.76
  6. Step 6: Final answer
    x = 245,254.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.