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Finding the Fourth Proportional to 13,752.27, 18,978.01 and 7,464.64

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Solution

The fourth proportional to 13,752.27, 18,978.01 and 7,464.64 is: 10,301.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.27 : 18,978.01 = 7,464.64 : x
  2. Step 2: Convert to fraction form
    13,752.27/18,978.01 = 7,464.64/x
  3. Step 3: Cross multiply
    13,752.27x = 18,978.01 × 7,464.64
  4. Step 4: Simplify right side
    13,752.27x = 141,664,012.57
  5. Step 5: Solve for x
    x = 141,664,012.57/13,752.27
  6. Step 6: Final answer
    x = 10,301.14

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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.