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Finding the Fourth Proportional to 9,964.10, 14,958.30 and 9,891.20

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Solution

The fourth proportional to 9,964.10, 14,958.30 and 9,891.20 is: 14,848.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,964.10 : 14,958.30 = 9,891.20 : x
  2. Step 2: Convert to fraction form
    9,964.10/14,958.30 = 9,891.20/x
  3. Step 3: Cross multiply
    9,964.10x = 14,958.30 × 9,891.20
  4. Step 4: Simplify right side
    9,964.10x = 147,955,536.96
  5. Step 5: Solve for x
    x = 147,955,536.96/9,964.10
  6. Step 6: Final answer
    x = 14,848.86

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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.