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Finding the Fourth Proportional to 9,940.76, 13,718.54 and 5,464.64

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Solution

The fourth proportional to 9,940.76, 13,718.54 and 5,464.64 is: 7,541.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.76 : 13,718.54 = 5,464.64 : x
  2. Step 2: Convert to fraction form
    9,940.76/13,718.54 = 5,464.64/x
  3. Step 3: Cross multiply
    9,940.76x = 13,718.54 × 5,464.64
  4. Step 4: Simplify right side
    9,940.76x = 74,966,882.43
  5. Step 5: Solve for x
    x = 74,966,882.43/9,940.76
  6. Step 6: Final answer
    x = 7,541.36

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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.