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Finding the Fourth Proportional to 9,366.70, 12,899.73 and 9,162.58

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Solution

The fourth proportional to 9,366.70, 12,899.73 and 9,162.58 is: 12,618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,366.70 : 12,899.73 = 9,162.58 : x
  2. Step 2: Convert to fraction form
    9,366.70/12,899.73 = 9,162.58/x
  3. Step 3: Cross multiply
    9,366.70x = 12,899.73 × 9,162.58
  4. Step 4: Simplify right side
    9,366.70x = 118,194,808.10
  5. Step 5: Solve for x
    x = 118,194,808.10/9,366.70
  6. Step 6: Final answer
    x = 12,618.62

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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.