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Finding the Fourth Proportional to 22,402.62, 30,916.08 and 12,331.08

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Solution

The fourth proportional to 22,402.62, 30,916.08 and 12,331.08 is: 17,017.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,402.62 : 30,916.08 = 12,331.08 : x
  2. Step 2: Convert to fraction form
    22,402.62/30,916.08 = 12,331.08/x
  3. Step 3: Cross multiply
    22,402.62x = 30,916.08 × 12,331.08
  4. Step 4: Simplify right side
    22,402.62x = 381,228,655.77
  5. Step 5: Solve for x
    x = 381,228,655.77/22,402.62
  6. Step 6: Final answer
    x = 17,017.15

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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.