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Finding the Fourth Proportional to 13,342.40, 18,409.44 and 8,035.52

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Solution

The fourth proportional to 13,342.40, 18,409.44 and 8,035.52 is: 11,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.40 : 18,409.44 = 8,035.52 : x
  2. Step 2: Convert to fraction form
    13,342.40/18,409.44 = 8,035.52/x
  3. Step 3: Cross multiply
    13,342.40x = 18,409.44 × 8,035.52
  4. Step 4: Simplify right side
    13,342.40x = 147,929,423.31
  5. Step 5: Solve for x
    x = 147,929,423.31/13,342.40
  6. Step 6: Final answer
    x = 11,087.17

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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.