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Finding the Fourth Proportional to 307,641.74, 424,544.80 and 171,674.25

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Solution

The fourth proportional to 307,641.74, 424,544.80 and 171,674.25 is: 236,910.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,641.74 : 424,544.80 = 171,674.25 : x
  2. Step 2: Convert to fraction form
    307,641.74/424,544.80 = 171,674.25/x
  3. Step 3: Cross multiply
    307,641.74x = 424,544.80 × 171,674.25
  4. Step 4: Simplify right side
    307,641.74x = 72,883,410,131.40
  5. Step 5: Solve for x
    x = 72,883,410,131.40/307,641.74
  6. Step 6: Final answer
    x = 236,910.02

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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.