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Finding the Fourth Proportional to 156,434.98, 215,884.52 and 88,462.13

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Solution

The fourth proportional to 156,434.98, 215,884.52 and 88,462.13 is: 122,080.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,434.98 : 215,884.52 = 88,462.13 : x
  2. Step 2: Convert to fraction form
    156,434.98/215,884.52 = 88,462.13/x
  3. Step 3: Cross multiply
    156,434.98x = 215,884.52 × 88,462.13
  4. Step 4: Simplify right side
    156,434.98x = 19,097,603,393.81
  5. Step 5: Solve for x
    x = 19,097,603,393.81/156,434.98
  6. Step 6: Final answer
    x = 122,080.13

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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.