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Finding the Fourth Proportional to 93,473.10, 140,209.65 and 72,477.90

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Solution

The fourth proportional to 93,473.10, 140,209.65 and 72,477.90 is: 108,716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,473.10 : 140,209.65 = 72,477.90 : x
  2. Step 2: Convert to fraction form
    93,473.10/140,209.65 = 72,477.90/x
  3. Step 3: Cross multiply
    93,473.10x = 140,209.65 × 72,477.90
  4. Step 4: Simplify right side
    93,473.10x = 10,162,100,991.74
  5. Step 5: Solve for x
    x = 10,162,100,991.74/93,473.10
  6. Step 6: Final answer
    x = 108,716.85

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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.