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Finding the Fourth Proportional to 31,852.70, 47,766.90 and 9,658.70

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Solution

The fourth proportional to 31,852.70, 47,766.90 and 9,658.70 is: 14,484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,852.70 : 47,766.90 = 9,658.70 : x
  2. Step 2: Convert to fraction form
    31,852.70/47,766.90 = 9,658.70/x
  3. Step 3: Cross multiply
    31,852.70x = 47,766.90 × 9,658.70
  4. Step 4: Simplify right side
    31,852.70x = 461,366,157.03
  5. Step 5: Solve for x
    x = 461,366,157.03/31,852.70
  6. Step 6: Final answer
    x = 14,484.37

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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.