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Finding the Fourth Proportional to 70,703.84, 97,568.79 and 38,872.49

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Solution

The fourth proportional to 70,703.84, 97,568.79 and 38,872.49 is: 53,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,703.84 : 97,568.79 = 38,872.49 : x
  2. Step 2: Convert to fraction form
    70,703.84/97,568.79 = 38,872.49/x
  3. Step 3: Cross multiply
    70,703.84x = 97,568.79 × 38,872.49
  4. Step 4: Simplify right side
    70,703.84x = 3,792,741,813.59
  5. Step 5: Solve for x
    x = 3,792,741,813.59/70,703.84
  6. Step 6: Final answer
    x = 53,642.66

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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.