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Finding the Fourth Proportional to 112,425.57, 168,554.99 and 68,041.82

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Solution

The fourth proportional to 112,425.57, 168,554.99 and 68,041.82 is: 102,012.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,425.57 : 168,554.99 = 68,041.82 : x
  2. Step 2: Convert to fraction form
    112,425.57/168,554.99 = 68,041.82/x
  3. Step 3: Cross multiply
    112,425.57x = 168,554.99 × 68,041.82
  4. Step 4: Simplify right side
    112,425.57x = 11,468,788,881.17
  5. Step 5: Solve for x
    x = 11,468,788,881.17/112,425.57
  6. Step 6: Final answer
    x = 102,012.28

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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.