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Finding the Fourth Proportional to 93,140.77, 139,721.16 and 39,838.29

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Solution

The fourth proportional to 93,140.77, 139,721.16 and 39,838.29 is: 59,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,140.77 : 139,721.16 = 39,838.29 : x
  2. Step 2: Convert to fraction form
    93,140.77/139,721.16 = 39,838.29/x
  3. Step 3: Cross multiply
    93,140.77x = 139,721.16 × 39,838.29
  4. Step 4: Simplify right side
    93,140.77x = 5,566,251,692.12
  5. Step 5: Solve for x
    x = 5,566,251,692.12/93,140.77
  6. Step 6: Final answer
    x = 59,761.71

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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.