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Finding the Fourth Proportional to 19,164.78, 28,773.90 and 15,218.46

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Solution

The fourth proportional to 19,164.78, 28,773.90 and 15,218.46 is: 22,848.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,164.78 : 28,773.90 = 15,218.46 : x
  2. Step 2: Convert to fraction form
    19,164.78/28,773.90 = 15,218.46/x
  3. Step 3: Cross multiply
    19,164.78x = 28,773.90 × 15,218.46
  4. Step 4: Simplify right side
    19,164.78x = 437,894,446.19
  5. Step 5: Solve for x
    x = 437,894,446.19/19,164.78
  6. Step 6: Final answer
    x = 22,848.92

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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.