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Finding the Fourth Proportional to 7,805.77, 11,700.45 and 4,844.21

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Solution

The fourth proportional to 7,805.77, 11,700.45 and 4,844.21 is: 7,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.77 : 11,700.45 = 4,844.21 : x
  2. Step 2: Convert to fraction form
    7,805.77/11,700.45 = 4,844.21/x
  3. Step 3: Cross multiply
    7,805.77x = 11,700.45 × 4,844.21
  4. Step 4: Simplify right side
    7,805.77x = 56,679,378.39
  5. Step 5: Solve for x
    x = 56,679,378.39/7,805.77
  6. Step 6: Final answer
    x = 7,261.22

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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.