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Finding the Fourth Proportional to 15,975.94, 22,048.92 and 9,172.64

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Solution

The fourth proportional to 15,975.94, 22,048.92 and 9,172.64 is: 12,659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,975.94 : 22,048.92 = 9,172.64 : x
  2. Step 2: Convert to fraction form
    15,975.94/22,048.92 = 9,172.64/x
  3. Step 3: Cross multiply
    15,975.94x = 22,048.92 × 9,172.64
  4. Step 4: Simplify right side
    15,975.94x = 202,246,805.55
  5. Step 5: Solve for x
    x = 202,246,805.55/15,975.94
  6. Step 6: Final answer
    x = 12,659.46

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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.