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Finding the Fourth Proportional to 352,751.58, 528,974.22 and 128,037.30

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Solution

The fourth proportional to 352,751.58, 528,974.22 and 128,037.30 is: 192,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,751.58 : 528,974.22 = 128,037.30 : x
  2. Step 2: Convert to fraction form
    352,751.58/528,974.22 = 128,037.30/x
  3. Step 3: Cross multiply
    352,751.58x = 528,974.22 × 128,037.30
  4. Step 4: Simplify right side
    352,751.58x = 67,728,430,898.41
  5. Step 5: Solve for x
    x = 67,728,430,898.41/352,751.58
  6. Step 6: Final answer
    x = 192,000.36

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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.