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Finding the Fourth Proportional to 14,618.00, 20,173.05 and 8,649.51

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Solution

The fourth proportional to 14,618.00, 20,173.05 and 8,649.51 is: 11,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.00 : 20,173.05 = 8,649.51 : x
  2. Step 2: Convert to fraction form
    14,618.00/20,173.05 = 8,649.51/x
  3. Step 3: Cross multiply
    14,618.00x = 20,173.05 × 8,649.51
  4. Step 4: Simplify right side
    14,618.00x = 174,486,997.71
  5. Step 5: Solve for x
    x = 174,486,997.71/14,618.00
  6. Step 6: Final answer
    x = 11,936.45

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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.