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Finding the Fourth Proportional to 172,488.88, 258,715.12 and 46,141.88

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Solution

The fourth proportional to 172,488.88, 258,715.12 and 46,141.88 is: 69,207.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,488.88 : 258,715.12 = 46,141.88 : x
  2. Step 2: Convert to fraction form
    172,488.88/258,715.12 = 46,141.88/x
  3. Step 3: Cross multiply
    172,488.88x = 258,715.12 × 46,141.88
  4. Step 4: Simplify right side
    172,488.88x = 11,937,602,021.23
  5. Step 5: Solve for x
    x = 11,937,602,021.23/172,488.88
  6. Step 6: Final answer
    x = 69,207.95

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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.