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Finding the Fourth Proportional to 7,235.33, 9,985.88 and 5,245.16

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Solution

The fourth proportional to 7,235.33, 9,985.88 and 5,245.16 is: 7,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.33 : 9,985.88 = 5,245.16 : x
  2. Step 2: Convert to fraction form
    7,235.33/9,985.88 = 5,245.16/x
  3. Step 3: Cross multiply
    7,235.33x = 9,985.88 × 5,245.16
  4. Step 4: Simplify right side
    7,235.33x = 52,377,501.52
  5. Step 5: Solve for x
    x = 52,377,501.52/7,235.33
  6. Step 6: Final answer
    x = 7,239.14

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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.