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Finding the Fourth Proportional to 4,698.78, 6,513.99 and 4,449.11

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Solution

The fourth proportional to 4,698.78, 6,513.99 and 4,449.11 is: 6,167.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,698.78 : 6,513.99 = 4,449.11 : x
  2. Step 2: Convert to fraction form
    4,698.78/6,513.99 = 4,449.11/x
  3. Step 3: Cross multiply
    4,698.78x = 6,513.99 × 4,449.11
  4. Step 4: Simplify right side
    4,698.78x = 28,981,425.48
  5. Step 5: Solve for x
    x = 28,981,425.48/4,698.78
  6. Step 6: Final answer
    x = 6,167.86

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Find fourth proportional to 2,349.39, 3,257.00 and 2,224.55
Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.