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Finding the Fourth Proportional to 352,399.21, 528,630.71 and 99,682.24

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Solution

The fourth proportional to 352,399.21, 528,630.71 and 99,682.24 is: 149,532.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,399.21 : 528,630.71 = 99,682.24 : x
  2. Step 2: Convert to fraction form
    352,399.21/528,630.71 = 99,682.24/x
  3. Step 3: Cross multiply
    352,399.21x = 528,630.71 × 99,682.24
  4. Step 4: Simplify right side
    352,399.21x = 52,695,093,305.59
  5. Step 5: Solve for x
    x = 52,695,093,305.59/352,399.21
  6. Step 6: Final answer
    x = 149,532.38

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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.