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Finding the Fourth Proportional to 289,089.36, 398,915.22 and 168,246.66

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Solution

The fourth proportional to 289,089.36, 398,915.22 and 168,246.66 is: 232,164.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,089.36 : 398,915.22 = 168,246.66 : x
  2. Step 2: Convert to fraction form
    289,089.36/398,915.22 = 168,246.66/x
  3. Step 3: Cross multiply
    289,089.36x = 398,915.22 × 168,246.66
  4. Step 4: Simplify right side
    289,089.36x = 67,116,153,388.17
  5. Step 5: Solve for x
    x = 67,116,153,388.17/289,089.36
  6. Step 6: Final answer
    x = 232,164.04

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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.