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Finding the Fourth Proportional to 7,841.98, 10,822.11 and 4,305.42

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Solution

The fourth proportional to 7,841.98, 10,822.11 and 4,305.42 is: 5,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.98 : 10,822.11 = 4,305.42 : x
  2. Step 2: Convert to fraction form
    7,841.98/10,822.11 = 4,305.42/x
  3. Step 3: Cross multiply
    7,841.98x = 10,822.11 × 4,305.42
  4. Step 4: Simplify right side
    7,841.98x = 46,593,728.84
  5. Step 5: Solve for x
    x = 46,593,728.84/7,841.98
  6. Step 6: Final answer
    x = 5,941.58

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Half scale
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Double scale
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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.