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Finding the Fourth Proportional to 108,502.89, 162,599.25 and 61,018.31

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Solution

The fourth proportional to 108,502.89, 162,599.25 and 61,018.31 is: 91,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,502.89 : 162,599.25 = 61,018.31 : x
  2. Step 2: Convert to fraction form
    108,502.89/162,599.25 = 61,018.31/x
  3. Step 3: Cross multiply
    108,502.89x = 162,599.25 × 61,018.31
  4. Step 4: Simplify right side
    108,502.89x = 9,921,531,734.36
  5. Step 5: Solve for x
    x = 9,921,531,734.36/108,502.89
  6. Step 6: Final answer
    x = 91,440.25

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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.