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Finding the Fourth Proportional to 70,213.35, 105,361.65 and 25,871.16

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Solution

The fourth proportional to 70,213.35, 105,361.65 and 25,871.16 is: 38,822.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,213.35 : 105,361.65 = 25,871.16 : x
  2. Step 2: Convert to fraction form
    70,213.35/105,361.65 = 25,871.16/x
  3. Step 3: Cross multiply
    70,213.35x = 105,361.65 × 25,871.16
  4. Step 4: Simplify right side
    70,213.35x = 2,725,828,105.01
  5. Step 5: Solve for x
    x = 2,725,828,105.01/70,213.35
  6. Step 6: Final answer
    x = 38,822.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.