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Finding the Fourth Proportional to 108,201.66, 149,315.50 and 60,455.40

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Solution

The fourth proportional to 108,201.66, 149,315.50 and 60,455.40 is: 83,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,201.66 : 149,315.50 = 60,455.40 : x
  2. Step 2: Convert to fraction form
    108,201.66/149,315.50 = 60,455.40/x
  3. Step 3: Cross multiply
    108,201.66x = 149,315.50 × 60,455.40
  4. Step 4: Simplify right side
    108,201.66x = 9,026,927,794.34
  5. Step 5: Solve for x
    x = 9,026,927,794.34/108,201.66
  6. Step 6: Final answer
    x = 83,426.89

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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.