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Finding the Fourth Proportional to 101,058.50, 139,458.84 and 55,740.71

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Solution

The fourth proportional to 101,058.50, 139,458.84 and 55,740.71 is: 76,921.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,058.50 : 139,458.84 = 55,740.71 : x
  2. Step 2: Convert to fraction form
    101,058.50/139,458.84 = 55,740.71/x
  3. Step 3: Cross multiply
    101,058.50x = 139,458.84 × 55,740.71
  4. Step 4: Simplify right side
    101,058.50x = 7,773,534,757.38
  5. Step 5: Solve for x
    x = 7,773,534,757.38/101,058.50
  6. Step 6: Final answer
    x = 76,921.14

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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.