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Finding the Fourth Proportional to 14,461.15, 21,666.97 and 7,891.95

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Solution

The fourth proportional to 14,461.15, 21,666.97 and 7,891.95 is: 11,824.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,461.15 : 21,666.97 = 7,891.95 : x
  2. Step 2: Convert to fraction form
    14,461.15/21,666.97 = 7,891.95/x
  3. Step 3: Cross multiply
    14,461.15x = 21,666.97 × 7,891.95
  4. Step 4: Simplify right side
    14,461.15x = 170,994,528.11
  5. Step 5: Solve for x
    x = 170,994,528.11/14,461.15
  6. Step 6: Final answer
    x = 11,824.41

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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.