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Finding the Fourth Proportional to 352,518.60, 528,000.30 and 212,032.20

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Solution

The fourth proportional to 352,518.60, 528,000.30 and 212,032.20 is: 317,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,518.60 : 528,000.30 = 212,032.20 : x
  2. Step 2: Convert to fraction form
    352,518.60/528,000.30 = 212,032.20/x
  3. Step 3: Cross multiply
    352,518.60x = 528,000.30 × 212,032.20
  4. Step 4: Simplify right side
    352,518.60x = 111,953,065,209.66
  5. Step 5: Solve for x
    x = 111,953,065,209.66/352,518.60
  6. Step 6: Final answer
    x = 317,580.59

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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.