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Finding the Fourth Proportional to 125,696.79, 173,436.70 and 70,507.89

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Solution

The fourth proportional to 125,696.79, 173,436.70 and 70,507.89 is: 97,286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,696.79 : 173,436.70 = 70,507.89 : x
  2. Step 2: Convert to fraction form
    125,696.79/173,436.70 = 70,507.89/x
  3. Step 3: Cross multiply
    125,696.79x = 173,436.70 × 70,507.89
  4. Step 4: Simplify right side
    125,696.79x = 12,228,655,765.56
  5. Step 5: Solve for x
    x = 12,228,655,765.56/125,696.79
  6. Step 6: Final answer
    x = 97,286.94

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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.