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Finding the Fourth Proportional to 46,919.59, 70,390.41 and 13,640.38

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Solution

The fourth proportional to 46,919.59, 70,390.41 and 13,640.38 is: 20,463.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,919.59 : 70,390.41 = 13,640.38 : x
  2. Step 2: Convert to fraction form
    46,919.59/70,390.41 = 13,640.38/x
  3. Step 3: Cross multiply
    46,919.59x = 70,390.41 × 13,640.38
  4. Step 4: Simplify right side
    46,919.59x = 960,151,940.76
  5. Step 5: Solve for x
    x = 960,151,940.76/46,919.59
  6. Step 6: Final answer
    x = 20,463.78

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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.