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Finding the Fourth Proportional to 29,675.50, 40,956.78 and 16,928.72

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Solution

The fourth proportional to 29,675.50, 40,956.78 and 16,928.72 is: 23,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,675.50 : 40,956.78 = 16,928.72 : x
  2. Step 2: Convert to fraction form
    29,675.50/40,956.78 = 16,928.72/x
  3. Step 3: Cross multiply
    29,675.50x = 40,956.78 × 16,928.72
  4. Step 4: Simplify right side
    29,675.50x = 693,345,860.72
  5. Step 5: Solve for x
    x = 693,345,860.72/29,675.50
  6. Step 6: Final answer
    x = 23,364.25

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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.