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Finding the Fourth Proportional to 16,821.59, 25,230.60 and 7,461.77

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Solution

The fourth proportional to 16,821.59, 25,230.60 and 7,461.77 is: 11,191.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.59 : 25,230.60 = 7,461.77 : x
  2. Step 2: Convert to fraction form
    16,821.59/25,230.60 = 7,461.77/x
  3. Step 3: Cross multiply
    16,821.59x = 25,230.60 × 7,461.77
  4. Step 4: Simplify right side
    16,821.59x = 188,264,808.01
  5. Step 5: Solve for x
    x = 188,264,808.01/16,821.59
  6. Step 6: Final answer
    x = 11,191.86

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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.