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Finding the Fourth Proportional to 213,792.76, 320,638.10 and 63,992.85

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Solution

The fourth proportional to 213,792.76, 320,638.10 and 63,992.85 is: 95,973.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,792.76 : 320,638.10 = 63,992.85 : x
  2. Step 2: Convert to fraction form
    213,792.76/320,638.10 = 63,992.85/x
  3. Step 3: Cross multiply
    213,792.76x = 320,638.10 × 63,992.85
  4. Step 4: Simplify right side
    213,792.76x = 20,518,544,315.23
  5. Step 5: Solve for x
    x = 20,518,544,315.23/213,792.76
  6. Step 6: Final answer
    x = 95,973.99

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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.