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Finding the Fourth Proportional to 13,568.79, 18,725.02 and 7,600.46

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Solution

The fourth proportional to 13,568.79, 18,725.02 and 7,600.46 is: 10,488.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.79 : 18,725.02 = 7,600.46 : x
  2. Step 2: Convert to fraction form
    13,568.79/18,725.02 = 7,600.46/x
  3. Step 3: Cross multiply
    13,568.79x = 18,725.02 × 7,600.46
  4. Step 4: Simplify right side
    13,568.79x = 142,318,765.51
  5. Step 5: Solve for x
    x = 142,318,765.51/13,568.79
  6. Step 6: Final answer
    x = 10,488.69

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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.