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Finding the Fourth Proportional to 18,798.13, 28,164.39 and 16,764.22

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Solution

The fourth proportional to 18,798.13, 28,164.39 and 16,764.22 is: 25,117.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.13 : 28,164.39 = 16,764.22 : x
  2. Step 2: Convert to fraction form
    18,798.13/28,164.39 = 16,764.22/x
  3. Step 3: Cross multiply
    18,798.13x = 28,164.39 × 16,764.22
  4. Step 4: Simplify right side
    18,798.13x = 472,154,030.13
  5. Step 5: Solve for x
    x = 472,154,030.13/18,798.13
  6. Step 6: Final answer
    x = 25,117.07

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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.