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Finding the Fourth Proportional to 171,903.67, 257,855.13 and 96,989.80

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Solution

The fourth proportional to 171,903.67, 257,855.13 and 96,989.80 is: 145,484.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,903.67 : 257,855.13 = 96,989.80 : x
  2. Step 2: Convert to fraction form
    171,903.67/257,855.13 = 96,989.80/x
  3. Step 3: Cross multiply
    171,903.67x = 257,855.13 × 96,989.80
  4. Step 4: Simplify right side
    171,903.67x = 25,009,317,487.67
  5. Step 5: Solve for x
    x = 25,009,317,487.67/171,903.67
  6. Step 6: Final answer
    x = 145,484.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.