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Finding the Fourth Proportional to 331,448.06, 457,401.45 and 188,211.11

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Solution

The fourth proportional to 331,448.06, 457,401.45 and 188,211.11 is: 259,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,448.06 : 457,401.45 = 188,211.11 : x
  2. Step 2: Convert to fraction form
    331,448.06/457,401.45 = 188,211.11/x
  3. Step 3: Cross multiply
    331,448.06x = 457,401.45 × 188,211.11
  4. Step 4: Simplify right side
    331,448.06x = 86,088,034,620.11
  5. Step 5: Solve for x
    x = 86,088,034,620.11/331,448.06
  6. Step 6: Final answer
    x = 259,733.11

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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.