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Finding the Fourth Proportional to 172,326.40, 258,501.88 and 45,965.92

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Solution

The fourth proportional to 172,326.40, 258,501.88 and 45,965.92 is: 68,952.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,326.40 : 258,501.88 = 45,965.92 : x
  2. Step 2: Convert to fraction form
    172,326.40/258,501.88 = 45,965.92/x
  3. Step 3: Cross multiply
    172,326.40x = 258,501.88 × 45,965.92
  4. Step 4: Simplify right side
    172,326.40x = 11,882,276,735.93
  5. Step 5: Solve for x
    x = 11,882,276,735.93/172,326.40
  6. Step 6: Final answer
    x = 68,952.16

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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.