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Finding the Fourth Proportional to 18,860.16, 26,039.11 and 16,840.09

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Solution

The fourth proportional to 18,860.16, 26,039.11 and 16,840.09 is: 23,250.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.16 : 26,039.11 = 16,840.09 : x
  2. Step 2: Convert to fraction form
    18,860.16/26,039.11 = 16,840.09/x
  3. Step 3: Cross multiply
    18,860.16x = 26,039.11 × 16,840.09
  4. Step 4: Simplify right side
    18,860.16x = 438,500,955.92
  5. Step 5: Solve for x
    x = 438,500,955.92/18,860.16
  6. Step 6: Final answer
    x = 23,250.12

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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.