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Finding the Fourth Proportional to 8,992.55, 12,409.54 and 5,013.43

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Solution

The fourth proportional to 8,992.55, 12,409.54 and 5,013.43 is: 6,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.55 : 12,409.54 = 5,013.43 : x
  2. Step 2: Convert to fraction form
    8,992.55/12,409.54 = 5,013.43/x
  3. Step 3: Cross multiply
    8,992.55x = 12,409.54 × 5,013.43
  4. Step 4: Simplify right side
    8,992.55x = 62,214,360.12
  5. Step 5: Solve for x
    x = 62,214,360.12/8,992.55
  6. Step 6: Final answer
    x = 6,918.43

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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.