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Finding the Fourth Proportional to 18,922.19, 26,111.90 and 10,538.69

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Solution

The fourth proportional to 18,922.19, 26,111.90 and 10,538.69 is: 14,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.19 : 26,111.90 = 10,538.69 : x
  2. Step 2: Convert to fraction form
    18,922.19/26,111.90 = 10,538.69/x
  3. Step 3: Cross multiply
    18,922.19x = 26,111.90 × 10,538.69
  4. Step 4: Simplify right side
    18,922.19x = 275,185,036.16
  5. Step 5: Solve for x
    x = 275,185,036.16/18,922.19
  6. Step 6: Final answer
    x = 14,542.98

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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.