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Finding the Fourth Proportional to 8,959.44, 12,363.46 and 4,980.32

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Solution

The fourth proportional to 8,959.44, 12,363.46 and 4,980.32 is: 6,872.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.44 : 12,363.46 = 4,980.32 : x
  2. Step 2: Convert to fraction form
    8,959.44/12,363.46 = 4,980.32/x
  3. Step 3: Cross multiply
    8,959.44x = 12,363.46 × 4,980.32
  4. Step 4: Simplify right side
    8,959.44x = 61,573,987.11
  5. Step 5: Solve for x
    x = 61,573,987.11/8,959.44
  6. Step 6: Final answer
    x = 6,872.53

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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.