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Finding the Fourth Proportional to 316,599.65, 436,908.21 and 171,406.95

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Solution

The fourth proportional to 316,599.65, 436,908.21 and 171,406.95 is: 236,541.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,599.65 : 436,908.21 = 171,406.95 : x
  2. Step 2: Convert to fraction form
    316,599.65/436,908.21 = 171,406.95/x
  3. Step 3: Cross multiply
    316,599.65x = 436,908.21 × 171,406.95
  4. Step 4: Simplify right side
    316,599.65x = 74,889,102,849.02
  5. Step 5: Solve for x
    x = 74,889,102,849.02/316,599.65
  6. Step 6: Final answer
    x = 236,541.97

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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.