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Finding the Fourth Proportional to 18,865.99, 26,035.50 and 10,368.64

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Solution

The fourth proportional to 18,865.99, 26,035.50 and 10,368.64 is: 14,308.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.99 : 26,035.50 = 10,368.64 : x
  2. Step 2: Convert to fraction form
    18,865.99/26,035.50 = 10,368.64/x
  3. Step 3: Cross multiply
    18,865.99x = 26,035.50 × 10,368.64
  4. Step 4: Simplify right side
    18,865.99x = 269,952,726.72
  5. Step 5: Solve for x
    x = 269,952,726.72/18,865.99
  6. Step 6: Final answer
    x = 14,308.96

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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.