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Finding the Fourth Proportional to 6,307.74, 8,700.21 and 4,961.52

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Solution

The fourth proportional to 6,307.74, 8,700.21 and 4,961.52 is: 6,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,307.74 : 8,700.21 = 4,961.52 : x
  2. Step 2: Convert to fraction form
    6,307.74/8,700.21 = 4,961.52/x
  3. Step 3: Cross multiply
    6,307.74x = 8,700.21 × 4,961.52
  4. Step 4: Simplify right side
    6,307.74x = 43,166,265.92
  5. Step 5: Solve for x
    x = 43,166,265.92/6,307.74
  6. Step 6: Final answer
    x = 6,843.38

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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.