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Finding the Fourth Proportional to 7,685.54, 10,611.24 and 5,804.72

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Solution

The fourth proportional to 7,685.54, 10,611.24 and 5,804.72 is: 8,014.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.54 : 10,611.24 = 5,804.72 : x
  2. Step 2: Convert to fraction form
    7,685.54/10,611.24 = 5,804.72/x
  3. Step 3: Cross multiply
    7,685.54x = 10,611.24 × 5,804.72
  4. Step 4: Simplify right side
    7,685.54x = 61,595,277.05
  5. Step 5: Solve for x
    x = 61,595,277.05/7,685.54
  6. Step 6: Final answer
    x = 8,014.44

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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.