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Finding the Fourth Proportional to 93,215.30, 139,871.55 and 40,630.10

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Solution

The fourth proportional to 93,215.30, 139,871.55 and 40,630.10 is: 60,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,215.30 : 139,871.55 = 40,630.10 : x
  2. Step 2: Convert to fraction form
    93,215.30/139,871.55 = 40,630.10/x
  3. Step 3: Cross multiply
    93,215.30x = 139,871.55 × 40,630.10
  4. Step 4: Simplify right side
    93,215.30x = 5,682,995,063.66
  5. Step 5: Solve for x
    x = 5,682,995,063.66/93,215.30
  6. Step 6: Final answer
    x = 60,966.33

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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.