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Finding the Fourth Proportional to 8,777.80, 12,113.54 and 4,799.16

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Solution

The fourth proportional to 8,777.80, 12,113.54 and 4,799.16 is: 6,622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.80 : 12,113.54 = 4,799.16 : x
  2. Step 2: Convert to fraction form
    8,777.80/12,113.54 = 4,799.16/x
  3. Step 3: Cross multiply
    8,777.80x = 12,113.54 × 4,799.16
  4. Step 4: Simplify right side
    8,777.80x = 58,134,816.63
  5. Step 5: Solve for x
    x = 58,134,816.63/8,777.80
  6. Step 6: Final answer
    x = 6,622.94

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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.