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Finding the Fourth Proportional to 85,651.96, 128,404.11 and 33,098.32

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Solution

The fourth proportional to 85,651.96, 128,404.11 and 33,098.32 is: 49,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,651.96 : 128,404.11 = 33,098.32 : x
  2. Step 2: Convert to fraction form
    85,651.96/128,404.11 = 33,098.32/x
  3. Step 3: Cross multiply
    85,651.96x = 128,404.11 × 33,098.32
  4. Step 4: Simplify right side
    85,651.96x = 4,249,960,322.10
  5. Step 5: Solve for x
    x = 4,249,960,322.10/85,651.96
  6. Step 6: Final answer
    x = 49,618.95

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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.