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Finding the Fourth Proportional to 16,431.16, 22,674.74 and 9,261.08

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Solution

The fourth proportional to 16,431.16, 22,674.74 and 9,261.08 is: 12,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,431.16 : 22,674.74 = 9,261.08 : x
  2. Step 2: Convert to fraction form
    16,431.16/22,674.74 = 9,261.08/x
  3. Step 3: Cross multiply
    16,431.16x = 22,674.74 × 9,261.08
  4. Step 4: Simplify right side
    16,431.16x = 209,992,581.12
  5. Step 5: Solve for x
    x = 209,992,581.12/16,431.16
  6. Step 6: Final answer
    x = 12,780.14

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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.