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Finding the Fourth Proportional to 93,126.25, 139,703.96 and 30,811.33

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Solution

The fourth proportional to 93,126.25, 139,703.96 and 30,811.33 is: 46,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,126.25 : 139,703.96 = 30,811.33 : x
  2. Step 2: Convert to fraction form
    93,126.25/139,703.96 = 30,811.33/x
  3. Step 3: Cross multiply
    93,126.25x = 139,703.96 × 30,811.33
  4. Step 4: Simplify right side
    93,126.25x = 4,304,464,813.87
  5. Step 5: Solve for x
    x = 4,304,464,813.87/93,126.25
  6. Step 6: Final answer
    x = 46,221.82

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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.