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Finding the Fourth Proportional to 7,235.94, 9,985.28 and 4,092.18

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Solution

The fourth proportional to 7,235.94, 9,985.28 and 4,092.18 is: 5,647.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.94 : 9,985.28 = 4,092.18 : x
  2. Step 2: Convert to fraction form
    7,235.94/9,985.28 = 4,092.18/x
  3. Step 3: Cross multiply
    7,235.94x = 9,985.28 × 4,092.18
  4. Step 4: Simplify right side
    7,235.94x = 40,861,563.11
  5. Step 5: Solve for x
    x = 40,861,563.11/7,235.94
  6. Step 6: Final answer
    x = 5,647.03

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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.