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Finding the Fourth Proportional to 70,955.20, 97,929.84 and 42,676.48

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Solution

The fourth proportional to 70,955.20, 97,929.84 and 42,676.48 is: 58,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,955.20 : 97,929.84 = 42,676.48 : x
  2. Step 2: Convert to fraction form
    70,955.20/97,929.84 = 42,676.48/x
  3. Step 3: Cross multiply
    70,955.20x = 97,929.84 × 42,676.48
  4. Step 4: Simplify right side
    70,955.20x = 4,179,300,858.16
  5. Step 5: Solve for x
    x = 4,179,300,858.16/70,955.20
  6. Step 6: Final answer
    x = 58,900.56

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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.