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Finding the Fourth Proportional to 61,585.60, 92,356.80 and 31,993.60

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Solution

The fourth proportional to 61,585.60, 92,356.80 and 31,993.60 is: 47,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,585.60 : 92,356.80 = 31,993.60 : x
  2. Step 2: Convert to fraction form
    61,585.60/92,356.80 = 31,993.60/x
  3. Step 3: Cross multiply
    61,585.60x = 92,356.80 × 31,993.60
  4. Step 4: Simplify right side
    61,585.60x = 2,954,826,516.48
  5. Step 5: Solve for x
    x = 2,954,826,516.48/61,585.60
  6. Step 6: Final answer
    x = 47,979.18

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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.