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Finding the Fourth Proportional to 31,850.50, 47,775.86 and 9,664.06

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Solution

The fourth proportional to 31,850.50, 47,775.86 and 9,664.06 is: 14,496.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,850.50 : 47,775.86 = 9,664.06 : x
  2. Step 2: Convert to fraction form
    31,850.50/47,775.86 = 9,664.06/x
  3. Step 3: Cross multiply
    31,850.50x = 47,775.86 × 9,664.06
  4. Step 4: Simplify right side
    31,850.50x = 461,708,777.59
  5. Step 5: Solve for x
    x = 461,708,777.59/31,850.50
  6. Step 6: Final answer
    x = 14,496.12

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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.