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Finding the Fourth Proportional to 14,235.84, 19,644.48 and 7,947.36

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Solution

The fourth proportional to 14,235.84, 19,644.48 and 7,947.36 is: 10,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,235.84 : 19,644.48 = 7,947.36 : x
  2. Step 2: Convert to fraction form
    14,235.84/19,644.48 = 7,947.36/x
  3. Step 3: Cross multiply
    14,235.84x = 19,644.48 × 7,947.36
  4. Step 4: Simplify right side
    14,235.84x = 156,121,754.57
  5. Step 5: Solve for x
    x = 156,121,754.57/14,235.84
  6. Step 6: Final answer
    x = 10,966.81

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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.