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Finding the Fourth Proportional to 22,002.40, 32,930.70 and 20,252.80

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Solution

The fourth proportional to 22,002.40, 32,930.70 and 20,252.80 is: 30,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,002.40 : 32,930.70 = 20,252.80 : x
  2. Step 2: Convert to fraction form
    22,002.40/32,930.70 = 20,252.80/x
  3. Step 3: Cross multiply
    22,002.40x = 32,930.70 × 20,252.80
  4. Step 4: Simplify right side
    22,002.40x = 666,938,880.96
  5. Step 5: Solve for x
    x = 666,938,880.96/22,002.40
  6. Step 6: Final answer
    x = 30,312.10

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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.