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Finding the Fourth Proportional to 9,924.64, 13,696.16 and 5,448.80

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Solution

The fourth proportional to 9,924.64, 13,696.16 and 5,448.80 is: 7,519.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,924.64 : 13,696.16 = 5,448.80 : x
  2. Step 2: Convert to fraction form
    9,924.64/13,696.16 = 5,448.80/x
  3. Step 3: Cross multiply
    9,924.64x = 13,696.16 × 5,448.80
  4. Step 4: Simplify right side
    9,924.64x = 74,627,643.60
  5. Step 5: Solve for x
    x = 74,627,643.60/9,924.64
  6. Step 6: Final answer
    x = 7,519.43

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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.