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Finding the Fourth Proportional to 14,689.01, 20,275.45 and 9,383.82

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Solution

The fourth proportional to 14,689.01, 20,275.45 and 9,383.82 is: 12,952.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.01 : 20,275.45 = 9,383.82 : x
  2. Step 2: Convert to fraction form
    14,689.01/20,275.45 = 9,383.82/x
  3. Step 3: Cross multiply
    14,689.01x = 20,275.45 × 9,383.82
  4. Step 4: Simplify right side
    14,689.01x = 190,261,314.08
  5. Step 5: Solve for x
    x = 190,261,314.08/14,689.01
  6. Step 6: Final answer
    x = 12,952.63

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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.