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Finding the Fourth Proportional to 352,063.90, 528,095.85 and 212,095.90

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Solution

The fourth proportional to 352,063.90, 528,095.85 and 212,095.90 is: 318,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,063.90 : 528,095.85 = 212,095.90 : x
  2. Step 2: Convert to fraction form
    352,063.90/528,095.85 = 212,095.90/x
  3. Step 3: Cross multiply
    352,063.90x = 528,095.85 × 212,095.90
  4. Step 4: Simplify right side
    352,063.90x = 112,006,964,592.02
  5. Step 5: Solve for x
    x = 112,006,964,592.02/352,063.90
  6. Step 6: Final answer
    x = 318,143.85

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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.