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Finding the Fourth Proportional to 15,666.66, 21,619.62 and 8,593.02

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Solution

The fourth proportional to 15,666.66, 21,619.62 and 8,593.02 is: 11,858.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,666.66 : 21,619.62 = 8,593.02 : x
  2. Step 2: Convert to fraction form
    15,666.66/21,619.62 = 8,593.02/x
  3. Step 3: Cross multiply
    15,666.66x = 21,619.62 × 8,593.02
  4. Step 4: Simplify right side
    15,666.66x = 185,777,827.05
  5. Step 5: Solve for x
    x = 185,777,827.05/15,666.66
  6. Step 6: Final answer
    x = 11,858.16

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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.