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Finding the Fourth Proportional to 18,925.06, 28,393.54 and 7,836.98

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Solution

The fourth proportional to 18,925.06, 28,393.54 and 7,836.98 is: 11,757.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.06 : 28,393.54 = 7,836.98 : x
  2. Step 2: Convert to fraction form
    18,925.06/28,393.54 = 7,836.98/x
  3. Step 3: Cross multiply
    18,925.06x = 28,393.54 × 7,836.98
  4. Step 4: Simplify right side
    18,925.06x = 222,519,605.11
  5. Step 5: Solve for x
    x = 222,519,605.11/18,925.06
  6. Step 6: Final answer
    x = 11,757.93

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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.