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Finding the Fourth Proportional to 352,658.71, 528,821.30 and 136,618.63

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Solution

The fourth proportional to 352,658.71, 528,821.30 and 136,618.63 is: 204,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,658.71 : 528,821.30 = 136,618.63 : x
  2. Step 2: Convert to fraction form
    352,658.71/528,821.30 = 136,618.63/x
  3. Step 3: Cross multiply
    352,658.71x = 528,821.30 × 136,618.63
  4. Step 4: Simplify right side
    352,658.71x = 72,246,838,876.71
  5. Step 5: Solve for x
    x = 72,246,838,876.71/352,658.71
  6. Step 6: Final answer
    x = 204,863.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.