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Finding the Fourth Proportional to 93,205.70, 139,857.76 and 40,619.30

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Solution

The fourth proportional to 93,205.70, 139,857.76 and 40,619.30 is: 60,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,205.70 : 139,857.76 = 40,619.30 : x
  2. Step 2: Convert to fraction form
    93,205.70/139,857.76 = 40,619.30/x
  3. Step 3: Cross multiply
    93,205.70x = 139,857.76 × 40,619.30
  4. Step 4: Simplify right side
    93,205.70x = 5,680,924,310.77
  5. Step 5: Solve for x
    x = 5,680,924,310.77/93,205.70
  6. Step 6: Final answer
    x = 60,950.40

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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.