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Finding the Fourth Proportional to 312,786.02, 431,645.43 and 169,545.41

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Solution

The fourth proportional to 312,786.02, 431,645.43 and 169,545.41 is: 233,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,786.02 : 431,645.43 = 169,545.41 : x
  2. Step 2: Convert to fraction form
    312,786.02/431,645.43 = 169,545.41/x
  3. Step 3: Cross multiply
    312,786.02x = 431,645.43 × 169,545.41
  4. Step 4: Simplify right side
    312,786.02x = 73,183,501,403.98
  5. Step 5: Solve for x
    x = 73,183,501,403.98/312,786.02
  6. Step 6: Final answer
    x = 233,973.06

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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.