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Finding the Fourth Proportional to 18,708.66, 28,053.60 and 6,224.28

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Solution

The fourth proportional to 18,708.66, 28,053.60 and 6,224.28 is: 9,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.66 : 28,053.60 = 6,224.28 : x
  2. Step 2: Convert to fraction form
    18,708.66/28,053.60 = 6,224.28/x
  3. Step 3: Cross multiply
    18,708.66x = 28,053.60 × 6,224.28
  4. Step 4: Simplify right side
    18,708.66x = 174,613,461.41
  5. Step 5: Solve for x
    x = 174,613,461.41/18,708.66
  6. Step 6: Final answer
    x = 9,333.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.