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Finding the Fourth Proportional to 93,617.41, 140,426.12 and 31,287.91

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Solution

The fourth proportional to 93,617.41, 140,426.12 and 31,287.91 is: 46,931.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,617.41 : 140,426.12 = 31,287.91 : x
  2. Step 2: Convert to fraction form
    93,617.41/140,426.12 = 31,287.91/x
  3. Step 3: Cross multiply
    93,617.41x = 140,426.12 × 31,287.91
  4. Step 4: Simplify right side
    93,617.41x = 4,393,639,296.70
  5. Step 5: Solve for x
    x = 4,393,639,296.70/93,617.41
  6. Step 6: Final answer
    x = 46,931.86

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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.