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Finding the Fourth Proportional to 9,955.64, 14,940.25 and 4,112.20

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Solution

The fourth proportional to 9,955.64, 14,940.25 and 4,112.20 is: 6,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,955.64 : 14,940.25 = 4,112.20 : x
  2. Step 2: Convert to fraction form
    9,955.64/14,940.25 = 4,112.20/x
  3. Step 3: Cross multiply
    9,955.64x = 14,940.25 × 4,112.20
  4. Step 4: Simplify right side
    9,955.64x = 61,437,304.44
  5. Step 5: Solve for x
    x = 61,437,304.44/9,955.64
  6. Step 6: Final answer
    x = 6,171.10

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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.