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Finding the Fourth Proportional to 15,880.16, 21,899.04 and 14,624.48

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Solution

The fourth proportional to 15,880.16, 21,899.04 and 14,624.48 is: 20,167.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.16 : 21,899.04 = 14,624.48 : x
  2. Step 2: Convert to fraction form
    15,880.16/21,899.04 = 14,624.48/x
  3. Step 3: Cross multiply
    15,880.16x = 21,899.04 × 14,624.48
  4. Step 4: Simplify right side
    15,880.16x = 320,262,072.50
  5. Step 5: Solve for x
    x = 320,262,072.50/15,880.16
  6. Step 6: Final answer
    x = 20,167.43

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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.