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Finding the Fourth Proportional to 70,956.41, 97,936.92 and 42,656.63

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Solution

The fourth proportional to 70,956.41, 97,936.92 and 42,656.63 is: 58,876.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.41 : 97,936.92 = 42,656.63 : x
  2. Step 2: Convert to fraction form
    70,956.41/97,936.92 = 42,656.63/x
  3. Step 3: Cross multiply
    70,956.41x = 97,936.92 × 42,656.63
  4. Step 4: Simplify right side
    70,956.41x = 4,177,658,470.10
  5. Step 5: Solve for x
    x = 4,177,658,470.10/70,956.41
  6. Step 6: Final answer
    x = 58,876.41

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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.