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Finding the Fourth Proportional to 70,672.31, 97,533.57 and 42,377.39

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Solution

The fourth proportional to 70,672.31, 97,533.57 and 42,377.39 is: 58,484.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672.31 : 97,533.57 = 42,377.39 : x
  2. Step 2: Convert to fraction form
    70,672.31/97,533.57 = 42,377.39/x
  3. Step 3: Cross multiply
    70,672.31x = 97,533.57 × 42,377.39
  4. Step 4: Simplify right side
    70,672.31x = 4,133,217,434.43
  5. Step 5: Solve for x
    x = 4,133,217,434.43/70,672.31
  6. Step 6: Final answer
    x = 58,484.26

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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.