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Finding the Fourth Proportional to 25,996.64, 38,990.88 and 8,466.32

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Solution

The fourth proportional to 25,996.64, 38,990.88 and 8,466.32 is: 12,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,996.64 : 38,990.88 = 8,466.32 : x
  2. Step 2: Convert to fraction form
    25,996.64/38,990.88 = 8,466.32/x
  3. Step 3: Cross multiply
    25,996.64x = 38,990.88 × 8,466.32
  4. Step 4: Simplify right side
    25,996.64x = 330,109,267.16
  5. Step 5: Solve for x
    x = 330,109,267.16/25,996.64
  6. Step 6: Final answer
    x = 12,698.15

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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.