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Finding the Fourth Proportional to 18,662.48, 27,973.88 and 6,970.64

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Solution

The fourth proportional to 18,662.48, 27,973.88 and 6,970.64 is: 10,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.48 : 27,973.88 = 6,970.64 : x
  2. Step 2: Convert to fraction form
    18,662.48/27,973.88 = 6,970.64/x
  3. Step 3: Cross multiply
    18,662.48x = 27,973.88 × 6,970.64
  4. Step 4: Simplify right side
    18,662.48x = 194,995,846.88
  5. Step 5: Solve for x
    x = 194,995,846.88/18,662.48
  6. Step 6: Final answer
    x = 10,448.55

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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.