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Finding the Fourth Proportional to 156,094.90, 215,411.52 and 84,474.91

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Solution

The fourth proportional to 156,094.90, 215,411.52 and 84,474.91 is: 116,575.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,094.90 : 215,411.52 = 84,474.91 : x
  2. Step 2: Convert to fraction form
    156,094.90/215,411.52 = 84,474.91/x
  3. Step 3: Cross multiply
    156,094.90x = 215,411.52 × 84,474.91
  4. Step 4: Simplify right side
    156,094.90x = 18,196,868,764.96
  5. Step 5: Solve for x
    x = 18,196,868,764.96/156,094.90
  6. Step 6: Final answer
    x = 116,575.68

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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.