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Finding the Fourth Proportional to 4,276.70, 6,415.05 and 4,039.10

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Solution

The fourth proportional to 4,276.70, 6,415.05 and 4,039.10 is: 6,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,276.70 : 6,415.05 = 4,039.10 : x
  2. Step 2: Convert to fraction form
    4,276.70/6,415.05 = 4,039.10/x
  3. Step 3: Cross multiply
    4,276.70x = 6,415.05 × 4,039.10
  4. Step 4: Simplify right side
    4,276.70x = 25,911,028.46
  5. Step 5: Solve for x
    x = 25,911,028.46/4,276.70
  6. Step 6: Final answer
    x = 6,058.65

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Similar ratio
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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.