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Finding the Fourth Proportional to 101,060.94, 139,465.17 and 55,740.90

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Solution

The fourth proportional to 101,060.94, 139,465.17 and 55,740.90 is: 76,923.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,060.94 : 139,465.17 = 55,740.90 : x
  2. Step 2: Convert to fraction form
    101,060.94/139,465.17 = 55,740.90/x
  3. Step 3: Cross multiply
    101,060.94x = 139,465.17 × 55,740.90
  4. Step 4: Simplify right side
    101,060.94x = 7,773,914,094.45
  5. Step 5: Solve for x
    x = 7,773,914,094.45/101,060.94
  6. Step 6: Final answer
    x = 76,923.03

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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.