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Finding the Fourth Proportional to 9,960.40, 14,922.60 and 4,754.80

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Solution

The fourth proportional to 9,960.40, 14,922.60 and 4,754.80 is: 7,123.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,960.40 : 14,922.60 = 4,754.80 : x
  2. Step 2: Convert to fraction form
    9,960.40/14,922.60 = 4,754.80/x
  3. Step 3: Cross multiply
    9,960.40x = 14,922.60 × 4,754.80
  4. Step 4: Simplify right side
    9,960.40x = 70,953,978.48
  5. Step 5: Solve for x
    x = 70,953,978.48/9,960.40
  6. Step 6: Final answer
    x = 7,123.61

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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.