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Finding the Fourth Proportional to 9,192.92, 12,691.40 and 7,035.40

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Solution

The fourth proportional to 9,192.92, 12,691.40 and 7,035.40 is: 9,712.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.92 : 12,691.40 = 7,035.40 : x
  2. Step 2: Convert to fraction form
    9,192.92/12,691.40 = 7,035.40/x
  3. Step 3: Cross multiply
    9,192.92x = 12,691.40 × 7,035.40
  4. Step 4: Simplify right side
    9,192.92x = 89,289,075.56
  5. Step 5: Solve for x
    x = 89,289,075.56/9,192.92
  6. Step 6: Final answer
    x = 9,712.81

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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.