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Finding the Fourth Proportional to 171,226.25, 256,900.25 and 76,447.88

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Solution

The fourth proportional to 171,226.25, 256,900.25 and 76,447.88 is: 114,699.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,226.25 : 256,900.25 = 76,447.88 : x
  2. Step 2: Convert to fraction form
    171,226.25/256,900.25 = 76,447.88/x
  3. Step 3: Cross multiply
    171,226.25x = 256,900.25 × 76,447.88
  4. Step 4: Simplify right side
    171,226.25x = 19,639,478,390.59
  5. Step 5: Solve for x
    x = 19,639,478,390.59/171,226.25
  6. Step 6: Final answer
    x = 114,699.00

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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.