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Finding the Fourth Proportional to 93,399.62, 139,276.85 and 92,557.22

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Solution

The fourth proportional to 93,399.62, 139,276.85 and 92,557.22 is: 138,020.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,399.62 : 139,276.85 = 92,557.22 : x
  2. Step 2: Convert to fraction form
    93,399.62/139,276.85 = 92,557.22/x
  3. Step 3: Cross multiply
    93,399.62x = 139,276.85 × 92,557.22
  4. Step 4: Simplify right side
    93,399.62x = 12,891,077,583.57
  5. Step 5: Solve for x
    x = 12,891,077,583.57/93,399.62
  6. Step 6: Final answer
    x = 138,020.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.