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Finding the Fourth Proportional to 93,286.80, 139,726.08 and 77,410.80

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Solution

The fourth proportional to 93,286.80, 139,726.08 and 77,410.80 is: 115,946.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,286.80 : 139,726.08 = 77,410.80 : x
  2. Step 2: Convert to fraction form
    93,286.80/139,726.08 = 77,410.80/x
  3. Step 3: Cross multiply
    93,286.80x = 139,726.08 × 77,410.80
  4. Step 4: Simplify right side
    93,286.80x = 10,816,307,633.66
  5. Step 5: Solve for x
    x = 10,816,307,633.66/93,286.80
  6. Step 6: Final answer
    x = 115,946.82

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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.