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Finding the Fourth Proportional to 93,348.59, 139,909.82 and 66,998.88

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Solution

The fourth proportional to 93,348.59, 139,909.82 and 66,998.88 is: 100,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,348.59 : 139,909.82 = 66,998.88 : x
  2. Step 2: Convert to fraction form
    93,348.59/139,909.82 = 66,998.88/x
  3. Step 3: Cross multiply
    93,348.59x = 139,909.82 × 66,998.88
  4. Step 4: Simplify right side
    93,348.59x = 9,373,800,906.01
  5. Step 5: Solve for x
    x = 9,373,800,906.01/93,348.59
  6. Step 6: Final answer
    x = 100,417.17

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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.