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Finding the Fourth Proportional to 15,051.55, 20,771.89 and 9,083.12

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Solution

The fourth proportional to 15,051.55, 20,771.89 and 9,083.12 is: 12,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.55 : 20,771.89 = 9,083.12 : x
  2. Step 2: Convert to fraction form
    15,051.55/20,771.89 = 9,083.12/x
  3. Step 3: Cross multiply
    15,051.55x = 20,771.89 × 9,083.12
  4. Step 4: Simplify right side
    15,051.55x = 188,673,569.50
  5. Step 5: Solve for x
    x = 188,673,569.50/15,051.55
  6. Step 6: Final answer
    x = 12,535.16

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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.