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Finding the Fourth Proportional to 108,702.92, 150,011.59 and 65,676.44

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Solution

The fourth proportional to 108,702.92, 150,011.59 and 65,676.44 is: 90,634.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,702.92 : 150,011.59 = 65,676.44 : x
  2. Step 2: Convert to fraction form
    108,702.92/150,011.59 = 65,676.44/x
  3. Step 3: Cross multiply
    108,702.92x = 150,011.59 × 65,676.44
  4. Step 4: Simplify right side
    108,702.92x = 9,852,227,400.78
  5. Step 5: Solve for x
    x = 9,852,227,400.78/108,702.92
  6. Step 6: Final answer
    x = 90,634.43

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1.5x scale

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.