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Finding the Fourth Proportional to 108,702.74, 150,011.33 and 65,676.26

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Solution

The fourth proportional to 108,702.74, 150,011.33 and 65,676.26 is: 90,634.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,702.74 : 150,011.33 = 65,676.26 : x
  2. Step 2: Convert to fraction form
    108,702.74/150,011.33 = 65,676.26/x
  3. Step 3: Cross multiply
    108,702.74x = 150,011.33 × 65,676.26
  4. Step 4: Simplify right side
    108,702.74x = 9,852,182,033.59
  5. Step 5: Solve for x
    x = 9,852,182,033.59/108,702.74
  6. Step 6: Final answer
    x = 90,634.17

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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.