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Finding the Fourth Proportional to 93,718.20, 140,421.78 and 65,957.88

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Solution

The fourth proportional to 93,718.20, 140,421.78 and 65,957.88 is: 98,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,718.20 : 140,421.78 = 65,957.88 : x
  2. Step 2: Convert to fraction form
    93,718.20/140,421.78 = 65,957.88/x
  3. Step 3: Cross multiply
    93,718.20x = 140,421.78 × 65,957.88
  4. Step 4: Simplify right side
    93,718.20x = 9,261,922,914.63
  5. Step 5: Solve for x
    x = 9,261,922,914.63/93,718.20
  6. Step 6: Final answer
    x = 98,827.37

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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.