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Finding the Fourth Proportional to 93,301.47, 139,835.30 and 66,605.49

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Solution

The fourth proportional to 93,301.47, 139,835.30 and 66,605.49 is: 99,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,301.47 : 139,835.30 = 66,605.49 : x
  2. Step 2: Convert to fraction form
    93,301.47/139,835.30 = 66,605.49/x
  3. Step 3: Cross multiply
    93,301.47x = 139,835.30 × 66,605.49
  4. Step 4: Simplify right side
    93,301.47x = 9,313,798,342.77
  5. Step 5: Solve for x
    x = 9,313,798,342.77/93,301.47
  6. Step 6: Final answer
    x = 99,824.78

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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.