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Finding the Fourth Proportional to 93,989.91, 140,898.53 and 40,648.53

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Solution

The fourth proportional to 93,989.91, 140,898.53 and 40,648.53 is: 60,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,989.91 : 140,898.53 = 40,648.53 : x
  2. Step 2: Convert to fraction form
    93,989.91/140,898.53 = 40,648.53/x
  3. Step 3: Cross multiply
    93,989.91x = 140,898.53 × 40,648.53
  4. Step 4: Simplify right side
    93,989.91x = 5,727,317,669.79
  5. Step 5: Solve for x
    x = 5,727,317,669.79/93,989.91
  6. Step 6: Final answer
    x = 60,935.45

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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.