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Finding the Fourth Proportional to 313,707.57, 432,881.31 and 177,712.41

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Solution

The fourth proportional to 313,707.57, 432,881.31 and 177,712.41 is: 245,223.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,707.57 : 432,881.31 = 177,712.41 : x
  2. Step 2: Convert to fraction form
    313,707.57/432,881.31 = 177,712.41/x
  3. Step 3: Cross multiply
    313,707.57x = 432,881.31 × 177,712.41
  4. Step 4: Simplify right side
    313,707.57x = 76,928,380,844.06
  5. Step 5: Solve for x
    x = 76,928,380,844.06/313,707.57
  6. Step 6: Final answer
    x = 245,223.22

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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.