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Finding the Fourth Proportional to 352,398.57, 528,479.39 and 127,711.96

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Solution

The fourth proportional to 352,398.57, 528,479.39 and 127,711.96 is: 191,525.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,398.57 : 528,479.39 = 127,711.96 : x
  2. Step 2: Convert to fraction form
    352,398.57/528,479.39 = 127,711.96/x
  3. Step 3: Cross multiply
    352,398.57x = 528,479.39 × 127,711.96
  4. Step 4: Simplify right side
    352,398.57x = 67,493,138,397.22
  5. Step 5: Solve for x
    x = 67,493,138,397.22/352,398.57
  6. Step 6: Final answer
    x = 191,525.01

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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.