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Finding the Fourth Proportional to 316,467.65, 436,708.45 and 173,199.98

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Solution

The fourth proportional to 316,467.65, 436,708.45 and 173,199.98 is: 239,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,467.65 : 436,708.45 = 173,199.98 : x
  2. Step 2: Convert to fraction form
    316,467.65/436,708.45 = 173,199.98/x
  3. Step 3: Cross multiply
    316,467.65x = 436,708.45 × 173,199.98
  4. Step 4: Simplify right side
    316,467.65x = 75,637,894,805.83
  5. Step 5: Solve for x
    x = 75,637,894,805.83/316,467.65
  6. Step 6: Final answer
    x = 239,006.72

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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.