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Finding the Fourth Proportional to 61,262.60, 91,772.40 and 53,956.40

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Solution

The fourth proportional to 61,262.60, 91,772.40 and 53,956.40 is: 80,827.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,262.60 : 91,772.40 = 53,956.40 : x
  2. Step 2: Convert to fraction form
    61,262.60/91,772.40 = 53,956.40/x
  3. Step 3: Cross multiply
    61,262.60x = 91,772.40 × 53,956.40
  4. Step 4: Simplify right side
    61,262.60x = 4,951,708,323.36
  5. Step 5: Solve for x
    x = 4,951,708,323.36/61,262.60
  6. Step 6: Final answer
    x = 80,827.59

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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.