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Finding the Fourth Proportional to 54,459.88, 81,631.74 and 31,035.88

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Solution

The fourth proportional to 54,459.88, 81,631.74 and 31,035.88 is: 46,520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,459.88 : 81,631.74 = 31,035.88 : x
  2. Step 2: Convert to fraction form
    54,459.88/81,631.74 = 31,035.88/x
  3. Step 3: Cross multiply
    54,459.88x = 81,631.74 × 31,035.88
  4. Step 4: Simplify right side
    54,459.88x = 2,533,512,886.83
  5. Step 5: Solve for x
    x = 2,533,512,886.83/54,459.88
  6. Step 6: Final answer
    x = 46,520.72

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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.