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Finding the Fourth Proportional to 124,808.66, 172,208.82 and 73,824.20

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Solution

The fourth proportional to 124,808.66, 172,208.82 and 73,824.20 is: 101,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,808.66 : 172,208.82 = 73,824.20 : x
  2. Step 2: Convert to fraction form
    124,808.66/172,208.82 = 73,824.20/x
  3. Step 3: Cross multiply
    124,808.66x = 172,208.82 × 73,824.20
  4. Step 4: Simplify right side
    124,808.66x = 12,713,178,369.44
  5. Step 5: Solve for x
    x = 12,713,178,369.44/124,808.66
  6. Step 6: Final answer
    x = 101,861.35

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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.