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Finding the Fourth Proportional to 125,090.34, 172,624.95 and 67,730.28

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Solution

The fourth proportional to 125,090.34, 172,624.95 and 67,730.28 is: 93,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,090.34 : 172,624.95 = 67,730.28 : x
  2. Step 2: Convert to fraction form
    125,090.34/172,624.95 = 67,730.28/x
  3. Step 3: Cross multiply
    125,090.34x = 172,624.95 × 67,730.28
  4. Step 4: Simplify right side
    125,090.34x = 11,691,936,198.49
  5. Step 5: Solve for x
    x = 11,691,936,198.49/125,090.34
  6. Step 6: Final answer
    x = 93,467.94

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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.