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Finding the Fourth Proportional to 213,950.13, 320,906.07 and 64,223.88

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Solution

The fourth proportional to 213,950.13, 320,906.07 and 64,223.88 is: 96,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,950.13 : 320,906.07 = 64,223.88 : x
  2. Step 2: Convert to fraction form
    213,950.13/320,906.07 = 64,223.88/x
  3. Step 3: Cross multiply
    213,950.13x = 320,906.07 × 64,223.88
  4. Step 4: Simplify right side
    213,950.13x = 20,609,832,930.95
  5. Step 5: Solve for x
    x = 20,609,832,930.95/213,950.13
  6. Step 6: Final answer
    x = 96,330.08

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1.5x scale

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.