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Finding the Fourth Proportional to 7,713.19, 10,644.19 and 4,355.84

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Solution

The fourth proportional to 7,713.19, 10,644.19 and 4,355.84 is: 6,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,713.19 : 10,644.19 = 4,355.84 : x
  2. Step 2: Convert to fraction form
    7,713.19/10,644.19 = 4,355.84/x
  3. Step 3: Cross multiply
    7,713.19x = 10,644.19 × 4,355.84
  4. Step 4: Simplify right side
    7,713.19x = 46,364,404.29
  5. Step 5: Solve for x
    x = 46,364,404.29/7,713.19
  6. Step 6: Final answer
    x = 6,011.05

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Half scale
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Double scale
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Similar ratio
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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.