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Finding the Fourth Proportional to 112,400.66, 168,455.66 and 84,098.66

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Solution

The fourth proportional to 112,400.66, 168,455.66 and 84,098.66 is: 126,039.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,400.66 : 168,455.66 = 84,098.66 : x
  2. Step 2: Convert to fraction form
    112,400.66/168,455.66 = 84,098.66/x
  3. Step 3: Cross multiply
    112,400.66x = 168,455.66 × 84,098.66
  4. Step 4: Simplify right side
    112,400.66x = 14,166,894,012.64
  5. Step 5: Solve for x
    x = 14,166,894,012.64/112,400.66
  6. Step 6: Final answer
    x = 126,039.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.