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Finding the Fourth Proportional to 8,756.15, 12,073.91 and 5,918.60

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Solution

The fourth proportional to 8,756.15, 12,073.91 and 5,918.60 is: 8,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.15 : 12,073.91 = 5,918.60 : x
  2. Step 2: Convert to fraction form
    8,756.15/12,073.91 = 5,918.60/x
  3. Step 3: Cross multiply
    8,756.15x = 12,073.91 × 5,918.60
  4. Step 4: Simplify right side
    8,756.15x = 71,460,553.76
  5. Step 5: Solve for x
    x = 71,460,553.76/8,756.15
  6. Step 6: Final answer
    x = 8,161.19

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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.