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Finding the Fourth Proportional to 187,390.71, 281,105.75 and 61,040.80

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Solution

The fourth proportional to 187,390.71, 281,105.75 and 61,040.80 is: 91,567.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,390.71 : 281,105.75 = 61,040.80 : x
  2. Step 2: Convert to fraction form
    187,390.71/281,105.75 = 61,040.80/x
  3. Step 3: Cross multiply
    187,390.71x = 281,105.75 × 61,040.80
  4. Step 4: Simplify right side
    187,390.71x = 17,158,919,864.60
  5. Step 5: Solve for x
    x = 17,158,919,864.60/187,390.71
  6. Step 6: Final answer
    x = 91,567.61

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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.