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Finding the Fourth Proportional to 124,796.16, 172,163.88 and 74,466

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Solution

The fourth proportional to 124,796.16, 172,163.88 and 74,466 is: 102,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,796.16 : 172,163.88 = 74,466 : x
  2. Step 2: Convert to fraction form
    124,796.16/172,163.88 = 74,466/x
  3. Step 3: Cross multiply
    124,796.16x = 172,163.88 × 74,466
  4. Step 4: Simplify right side
    124,796.16x = 12,820,355,488.08
  5. Step 5: Solve for x
    x = 12,820,355,488.08/124,796.16
  6. Step 6: Final answer
    x = 102,730.37

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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.