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Finding the Fourth Proportional to 70,042.78, 96,655.83 and 43,187.78

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Solution

The fourth proportional to 70,042.78, 96,655.83 and 43,187.78 is: 59,597.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,042.78 : 96,655.83 = 43,187.78 : x
  2. Step 2: Convert to fraction form
    70,042.78/96,655.83 = 43,187.78/x
  3. Step 3: Cross multiply
    70,042.78x = 96,655.83 × 43,187.78
  4. Step 4: Simplify right side
    70,042.78x = 4,174,351,044.37
  5. Step 5: Solve for x
    x = 4,174,351,044.37/70,042.78
  6. Step 6: Final answer
    x = 59,597.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.