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Finding the Fourth Proportional to 11,075.92, 15,283.92 and 6,361.72

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Solution

The fourth proportional to 11,075.92, 15,283.92 and 6,361.72 is: 8,778.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,075.92 : 15,283.92 = 6,361.72 : x
  2. Step 2: Convert to fraction form
    11,075.92/15,283.92 = 6,361.72/x
  3. Step 3: Cross multiply
    11,075.92x = 15,283.92 × 6,361.72
  4. Step 4: Simplify right side
    11,075.92x = 97,232,019.54
  5. Step 5: Solve for x
    x = 97,232,019.54/11,075.92
  6. Step 6: Final answer
    x = 8,778.69

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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.