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Finding the Fourth Proportional to 156,393.60, 215,826.42 and 88,406.52

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Solution

The fourth proportional to 156,393.60, 215,826.42 and 88,406.52 is: 122,002.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,393.60 : 215,826.42 = 88,406.52 : x
  2. Step 2: Convert to fraction form
    156,393.60/215,826.42 = 88,406.52/x
  3. Step 3: Cross multiply
    156,393.60x = 215,826.42 × 88,406.52
  4. Step 4: Simplify right side
    156,393.60x = 19,080,462,716.26
  5. Step 5: Solve for x
    x = 19,080,462,716.26/156,393.60
  6. Step 6: Final answer
    x = 122,002.84

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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.