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Finding the Fourth Proportional to 316,659.16, 436,990.31 and 171,466.53

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Solution

The fourth proportional to 316,659.16, 436,990.31 and 171,466.53 is: 236,624.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,659.16 : 436,990.31 = 171,466.53 : x
  2. Step 2: Convert to fraction form
    316,659.16/436,990.31 = 171,466.53/x
  3. Step 3: Cross multiply
    316,659.16x = 436,990.31 × 171,466.53
  4. Step 4: Simplify right side
    316,659.16x = 74,929,212,099.32
  5. Step 5: Solve for x
    x = 74,929,212,099.32/316,659.16
  6. Step 6: Final answer
    x = 236,624.17

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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.