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Finding the Fourth Proportional to 22,333.75, 30,821.05 and 12,774.50

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Solution

The fourth proportional to 22,333.75, 30,821.05 and 12,774.50 is: 17,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,333.75 : 30,821.05 = 12,774.50 : x
  2. Step 2: Convert to fraction form
    22,333.75/30,821.05 = 12,774.50/x
  3. Step 3: Cross multiply
    22,333.75x = 30,821.05 × 12,774.50
  4. Step 4: Simplify right side
    22,333.75x = 393,723,503.23
  5. Step 5: Solve for x
    x = 393,723,503.23/22,333.75
  6. Step 6: Final answer
    x = 17,629.08

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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.