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Finding the Fourth Proportional to 93,140.79, 139,601.17 and 39,817.17

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Solution

The fourth proportional to 93,140.79, 139,601.17 and 39,817.17 is: 59,678.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,140.79 : 139,601.17 = 39,817.17 : x
  2. Step 2: Convert to fraction form
    93,140.79/139,601.17 = 39,817.17/x
  3. Step 3: Cross multiply
    93,140.79x = 139,601.17 × 39,817.17
  4. Step 4: Simplify right side
    93,140.79x = 5,558,523,567.86
  5. Step 5: Solve for x
    x = 5,558,523,567.86/93,140.79
  6. Step 6: Final answer
    x = 59,678.73

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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.