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Finding the Fourth Proportional to 108,030.80, 149,022.60 and 63,310.16

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Solution

The fourth proportional to 108,030.80, 149,022.60 and 63,310.16 is: 87,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,030.80 : 149,022.60 = 63,310.16 : x
  2. Step 2: Convert to fraction form
    108,030.80/149,022.60 = 63,310.16/x
  3. Step 3: Cross multiply
    108,030.80x = 149,022.60 × 63,310.16
  4. Step 4: Simplify right side
    108,030.80x = 9,434,644,649.62
  5. Step 5: Solve for x
    x = 9,434,644,649.62/108,030.80
  6. Step 6: Final answer
    x = 87,332.91

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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.