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Finding the Fourth Proportional to 101,859.60, 140,559.30 and 56,535.96

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Solution

The fourth proportional to 101,859.60, 140,559.30 and 56,535.96 is: 78,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,859.60 : 140,559.30 = 56,535.96 : x
  2. Step 2: Convert to fraction form
    101,859.60/140,559.30 = 56,535.96/x
  3. Step 3: Cross multiply
    101,859.60x = 140,559.30 × 56,535.96
  4. Step 4: Simplify right side
    101,859.60x = 7,946,654,962.43
  5. Step 5: Solve for x
    x = 7,946,654,962.43/101,859.60
  6. Step 6: Final answer
    x = 78,015.77

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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.