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Finding the Fourth Proportional to 316,192.09, 436,339.95 and 172,950.88

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Solution

The fourth proportional to 316,192.09, 436,339.95 and 172,950.88 is: 238,669.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,192.09 : 436,339.95 = 172,950.88 : x
  2. Step 2: Convert to fraction form
    316,192.09/436,339.95 = 172,950.88/x
  3. Step 3: Cross multiply
    316,192.09x = 436,339.95 × 172,950.88
  4. Step 4: Simplify right side
    316,192.09x = 75,465,378,331.66
  5. Step 5: Solve for x
    x = 75,465,378,331.66/316,192.09
  6. Step 6: Final answer
    x = 238,669.41

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1.5x scale

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.