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Finding the Fourth Proportional to 101,486.07, 140,047.92 and 56,165.94

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Solution

The fourth proportional to 101,486.07, 140,047.92 and 56,165.94 is: 77,507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,486.07 : 140,047.92 = 56,165.94 : x
  2. Step 2: Convert to fraction form
    101,486.07/140,047.92 = 56,165.94/x
  3. Step 3: Cross multiply
    101,486.07x = 140,047.92 × 56,165.94
  4. Step 4: Simplify right side
    101,486.07x = 7,865,923,071.84
  5. Step 5: Solve for x
    x = 7,865,923,071.84/101,486.07
  6. Step 6: Final answer
    x = 77,507.42

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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.