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Finding the Fourth Proportional to 19,254.69, 28,885.95 and 10,938.69

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Solution

The fourth proportional to 19,254.69, 28,885.95 and 10,938.69 is: 16,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,254.69 : 28,885.95 = 10,938.69 : x
  2. Step 2: Convert to fraction form
    19,254.69/28,885.95 = 10,938.69/x
  3. Step 3: Cross multiply
    19,254.69x = 28,885.95 × 10,938.69
  4. Step 4: Simplify right side
    19,254.69x = 315,974,452.41
  5. Step 5: Solve for x
    x = 315,974,452.41/19,254.69
  6. Step 6: Final answer
    x = 16,410.26

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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.