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Finding the Fourth Proportional to 65,502.91, 98,172.14 and 28,018.92

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Solution

The fourth proportional to 65,502.91, 98,172.14 and 28,018.92 is: 41,993.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,502.91 : 98,172.14 = 28,018.92 : x
  2. Step 2: Convert to fraction form
    65,502.91/98,172.14 = 28,018.92/x
  3. Step 3: Cross multiply
    65,502.91x = 98,172.14 × 28,018.92
  4. Step 4: Simplify right side
    65,502.91x = 2,750,677,336.89
  5. Step 5: Solve for x
    x = 2,750,677,336.89/65,502.91
  6. Step 6: Final answer
    x = 41,993.21

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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.