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Finding the Fourth Proportional to 124,546.79, 171,878.35 and 70,839.53

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Solution

The fourth proportional to 124,546.79, 171,878.35 and 70,839.53 is: 97,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,546.79 : 171,878.35 = 70,839.53 : x
  2. Step 2: Convert to fraction form
    124,546.79/171,878.35 = 70,839.53/x
  3. Step 3: Cross multiply
    124,546.79x = 171,878.35 × 70,839.53
  4. Step 4: Simplify right side
    124,546.79x = 12,175,780,494.68
  5. Step 5: Solve for x
    x = 12,175,780,494.68/124,546.79
  6. Step 6: Final answer
    x = 97,760.70

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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.