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Finding the Fourth Proportional to 9,611.12, 13,263.55 and 5,362.47

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Solution

The fourth proportional to 9,611.12, 13,263.55 and 5,362.47 is: 7,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,611.12 : 13,263.55 = 5,362.47 : x
  2. Step 2: Convert to fraction form
    9,611.12/13,263.55 = 5,362.47/x
  3. Step 3: Cross multiply
    9,611.12x = 13,263.55 × 5,362.47
  4. Step 4: Simplify right side
    9,611.12x = 71,125,375.56
  5. Step 5: Solve for x
    x = 71,125,375.56/9,611.12
  6. Step 6: Final answer
    x = 7,400.32

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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.