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Finding the Fourth Proportional to 10,616.55, 14,617.26 and 8,090.61

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Solution

The fourth proportional to 10,616.55, 14,617.26 and 8,090.61 is: 11,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,616.55 : 14,617.26 = 8,090.61 : x
  2. Step 2: Convert to fraction form
    10,616.55/14,617.26 = 8,090.61/x
  3. Step 3: Cross multiply
    10,616.55x = 14,617.26 × 8,090.61
  4. Step 4: Simplify right side
    10,616.55x = 118,262,549.93
  5. Step 5: Solve for x
    x = 118,262,549.93/10,616.55
  6. Step 6: Final answer
    x = 11,139.45

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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.