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Finding the Fourth Proportional to 216,777.66, 325,137.72 and 98,421.78

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Solution

The fourth proportional to 216,777.66, 325,137.72 and 98,421.78 is: 147,619.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,777.66 : 325,137.72 = 98,421.78 : x
  2. Step 2: Convert to fraction form
    216,777.66/325,137.72 = 98,421.78/x
  3. Step 3: Cross multiply
    216,777.66x = 325,137.72 × 98,421.78
  4. Step 4: Simplify right side
    216,777.66x = 32,000,633,147.54
  5. Step 5: Solve for x
    x = 32,000,633,147.54/216,777.66
  6. Step 6: Final answer
    x = 147,619.61

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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.