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Finding the Fourth Proportional to 172,700.64, 258,985.44 and 67,506.48

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Solution

The fourth proportional to 172,700.64, 258,985.44 and 67,506.48 is: 101,234.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,700.64 : 258,985.44 = 67,506.48 : x
  2. Step 2: Convert to fraction form
    172,700.64/258,985.44 = 67,506.48/x
  3. Step 3: Cross multiply
    172,700.64x = 258,985.44 × 67,506.48
  4. Step 4: Simplify right side
    172,700.64x = 17,483,195,425.65
  5. Step 5: Solve for x
    x = 17,483,195,425.65/172,700.64
  6. Step 6: Final answer
    x = 101,234.11

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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.