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Finding the Fourth Proportional to 8,481.17, 12,700.80 and 4,961.93

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Solution

The fourth proportional to 8,481.17, 12,700.80 and 4,961.93 is: 7,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.17 : 12,700.80 = 4,961.93 : x
  2. Step 2: Convert to fraction form
    8,481.17/12,700.80 = 4,961.93/x
  3. Step 3: Cross multiply
    8,481.17x = 12,700.80 × 4,961.93
  4. Step 4: Simplify right side
    8,481.17x = 63,020,417.04
  5. Step 5: Solve for x
    x = 63,020,417.04/8,481.17
  6. Step 6: Final answer
    x = 7,430.63

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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.