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Finding the Fourth Proportional to 46,519.60, 69,757.80 and 20,210.80

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Solution

The fourth proportional to 46,519.60, 69,757.80 and 20,210.80 is: 30,306.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,519.60 : 69,757.80 = 20,210.80 : x
  2. Step 2: Convert to fraction form
    46,519.60/69,757.80 = 20,210.80/x
  3. Step 3: Cross multiply
    46,519.60x = 69,757.80 × 20,210.80
  4. Step 4: Simplify right side
    46,519.60x = 1,409,860,944.24
  5. Step 5: Solve for x
    x = 1,409,860,944.24/46,519.60
  6. Step 6: Final answer
    x = 30,306.82

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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.