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Finding the Fourth Proportional to 72,712.96, 109,010.59 and 32,702.64

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Solution

The fourth proportional to 72,712.96, 109,010.59 and 32,702.64 is: 49,027.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,712.96 : 109,010.59 = 32,702.64 : x
  2. Step 2: Convert to fraction form
    72,712.96/109,010.59 = 32,702.64/x
  3. Step 3: Cross multiply
    72,712.96x = 109,010.59 × 32,702.64
  4. Step 4: Simplify right side
    72,712.96x = 3,564,934,080.96
  5. Step 5: Solve for x
    x = 3,564,934,080.96/72,712.96
  6. Step 6: Final answer
    x = 49,027.49

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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.