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Finding the Fourth Proportional to 8,958.44, 12,362.08 and 4,979.32

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Solution

The fourth proportional to 8,958.44, 12,362.08 and 4,979.32 is: 6,871.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.44 : 12,362.08 = 4,979.32 : x
  2. Step 2: Convert to fraction form
    8,958.44/12,362.08 = 4,979.32/x
  3. Step 3: Cross multiply
    8,958.44x = 12,362.08 × 4,979.32
  4. Step 4: Simplify right side
    8,958.44x = 61,554,752.19
  5. Step 5: Solve for x
    x = 61,554,752.19/8,958.44
  6. Step 6: Final answer
    x = 6,871.15

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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.