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Finding the Fourth Proportional to 13,941.15, 19,238.81 and 7,653.93

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Solution

The fourth proportional to 13,941.15, 19,238.81 and 7,653.93 is: 10,562.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.15 : 19,238.81 = 7,653.93 : x
  2. Step 2: Convert to fraction form
    13,941.15/19,238.81 = 7,653.93/x
  3. Step 3: Cross multiply
    13,941.15x = 19,238.81 × 7,653.93
  4. Step 4: Simplify right side
    13,941.15x = 147,252,427.96
  5. Step 5: Solve for x
    x = 147,252,427.96/13,941.15
  6. Step 6: Final answer
    x = 10,562.43

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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.