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Finding the Fourth Proportional to 323,147.50, 445,828.12 and 187,107.19

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Solution

The fourth proportional to 323,147.50, 445,828.12 and 187,107.19 is: 258,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,147.50 : 445,828.12 = 187,107.19 : x
  2. Step 2: Convert to fraction form
    323,147.50/445,828.12 = 187,107.19/x
  3. Step 3: Cross multiply
    323,147.50x = 445,828.12 × 187,107.19
  4. Step 4: Simplify right side
    323,147.50x = 83,417,645,820.65
  5. Step 5: Solve for x
    x = 83,417,645,820.65/323,147.50
  6. Step 6: Final answer
    x = 258,141.08

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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.