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Finding the Fourth Proportional to 101,176.50, 139,625.81 and 55,854.38

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Solution

The fourth proportional to 101,176.50, 139,625.81 and 55,854.38 is: 77,080.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,176.50 : 139,625.81 = 55,854.38 : x
  2. Step 2: Convert to fraction form
    101,176.50/139,625.81 = 55,854.38/x
  3. Step 3: Cross multiply
    101,176.50x = 139,625.81 × 55,854.38
  4. Step 4: Simplify right side
    101,176.50x = 7,798,712,072.15
  5. Step 5: Solve for x
    x = 7,798,712,072.15/101,176.50
  6. Step 6: Final answer
    x = 77,080.27

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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.