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Finding the Fourth Proportional to 6,270.75, 8,650.56 and 5,275.65

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Solution

The fourth proportional to 6,270.75, 8,650.56 and 5,275.65 is: 7,277.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,270.75 : 8,650.56 = 5,275.65 : x
  2. Step 2: Convert to fraction form
    6,270.75/8,650.56 = 5,275.65/x
  3. Step 3: Cross multiply
    6,270.75x = 8,650.56 × 5,275.65
  4. Step 4: Simplify right side
    6,270.75x = 45,637,326.86
  5. Step 5: Solve for x
    x = 45,637,326.86/6,270.75
  6. Step 6: Final answer
    x = 7,277.81

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Half scale
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Double scale
Find fourth proportional to 6,271.75, 8,651.94 and 5,276.65
Similar ratio
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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.