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Finding the Fourth Proportional to 18,932.90, 28,280.01 and 18,408.02

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Solution

The fourth proportional to 18,932.90, 28,280.01 and 18,408.02 is: 27,495.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.90 : 28,280.01 = 18,408.02 : x
  2. Step 2: Convert to fraction form
    18,932.90/28,280.01 = 18,408.02/x
  3. Step 3: Cross multiply
    18,932.90x = 28,280.01 × 18,408.02
  4. Step 4: Simplify right side
    18,932.90x = 520,578,897.64
  5. Step 5: Solve for x
    x = 520,578,897.64/18,932.90
  6. Step 6: Final answer
    x = 27,495.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.