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Finding the Fourth Proportional to 54,818.82, 81,746.91 and 54,319.86

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Solution

The fourth proportional to 54,818.82, 81,746.91 and 54,319.86 is: 81,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,818.82 : 81,746.91 = 54,319.86 : x
  2. Step 2: Convert to fraction form
    54,818.82/81,746.91 = 54,319.86/x
  3. Step 3: Cross multiply
    54,818.82x = 81,746.91 × 54,319.86
  4. Step 4: Simplify right side
    54,818.82x = 4,440,480,706.63
  5. Step 5: Solve for x
    x = 4,440,480,706.63/54,818.82
  6. Step 6: Final answer
    x = 81,002.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.