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Finding the Fourth Proportional to 101,713.97, 140,373.59 and 56,406.16

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Solution

The fourth proportional to 101,713.97, 140,373.59 and 56,406.16 is: 77,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,713.97 : 140,373.59 = 56,406.16 : x
  2. Step 2: Convert to fraction form
    101,713.97/140,373.59 = 56,406.16/x
  3. Step 3: Cross multiply
    101,713.97x = 140,373.59 × 56,406.16
  4. Step 4: Simplify right side
    101,713.97x = 7,917,934,193.42
  5. Step 5: Solve for x
    x = 7,917,934,193.42/101,713.97
  6. Step 6: Final answer
    x = 77,845.10

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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.