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Finding the Fourth Proportional to 18,867.60, 26,035.59 and 10,369.64

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Solution

The fourth proportional to 18,867.60, 26,035.59 and 10,369.64 is: 14,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.60 : 26,035.59 = 10,369.64 : x
  2. Step 2: Convert to fraction form
    18,867.60/26,035.59 = 10,369.64/x
  3. Step 3: Cross multiply
    18,867.60x = 26,035.59 × 10,369.64
  4. Step 4: Simplify right side
    18,867.60x = 269,979,565.31
  5. Step 5: Solve for x
    x = 269,979,565.31/18,867.60
  6. Step 6: Final answer
    x = 14,309.16

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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.