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Finding the Fourth Proportional to 25,994.64, 38,987.88 and 8,464.32

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Solution

The fourth proportional to 25,994.64, 38,987.88 and 8,464.32 is: 12,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,994.64 : 38,987.88 = 8,464.32 : x
  2. Step 2: Convert to fraction form
    25,994.64/38,987.88 = 8,464.32/x
  3. Step 3: Cross multiply
    25,994.64x = 38,987.88 × 8,464.32
  4. Step 4: Simplify right side
    25,994.64x = 330,005,892.44
  5. Step 5: Solve for x
    x = 330,005,892.44/25,994.64
  6. Step 6: Final answer
    x = 12,695.15

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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.