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Finding the Fourth Proportional to 6,235.32, 8,615.66 and 4,986.69

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Solution

The fourth proportional to 6,235.32, 8,615.66 and 4,986.69 is: 6,890.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,235.32 : 8,615.66 = 4,986.69 : x
  2. Step 2: Convert to fraction form
    6,235.32/8,615.66 = 4,986.69/x
  3. Step 3: Cross multiply
    6,235.32x = 8,615.66 × 4,986.69
  4. Step 4: Simplify right side
    6,235.32x = 42,963,625.57
  5. Step 5: Solve for x
    x = 42,963,625.57/6,235.32
  6. Step 6: Final answer
    x = 6,890.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.