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Finding the Fourth Proportional to 352,059.90, 528,089.85 and 212,091.90

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Solution

The fourth proportional to 352,059.90, 528,089.85 and 212,091.90 is: 318,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,059.90 : 528,089.85 = 212,091.90 : x
  2. Step 2: Convert to fraction form
    352,059.90/528,089.85 = 212,091.90/x
  3. Step 3: Cross multiply
    352,059.90x = 528,089.85 × 212,091.90
  4. Step 4: Simplify right side
    352,059.90x = 112,003,579,657.22
  5. Step 5: Solve for x
    x = 112,003,579,657.22/352,059.90
  6. Step 6: Final answer
    x = 318,137.85

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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.