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Finding the Fourth Proportional to 29,303.76, 40,438.80 and 16,728.24

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Solution

The fourth proportional to 29,303.76, 40,438.80 and 16,728.24 is: 23,084.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,303.76 : 40,438.80 = 16,728.24 : x
  2. Step 2: Convert to fraction form
    29,303.76/40,438.80 = 16,728.24/x
  3. Step 3: Cross multiply
    29,303.76x = 40,438.80 × 16,728.24
  4. Step 4: Simplify right side
    29,303.76x = 676,469,951.71
  5. Step 5: Solve for x
    x = 676,469,951.71/29,303.76
  6. Step 6: Final answer
    x = 23,084.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.