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Finding the Fourth Proportional to 70,908.48, 97,858.31 and 40,703.58

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Solution

The fourth proportional to 70,908.48, 97,858.31 and 40,703.58 is: 56,173.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908.48 : 97,858.31 = 40,703.58 : x
  2. Step 2: Convert to fraction form
    70,908.48/97,858.31 = 40,703.58/x
  3. Step 3: Cross multiply
    70,908.48x = 97,858.31 × 40,703.58
  4. Step 4: Simplify right side
    70,908.48x = 3,983,183,549.75
  5. Step 5: Solve for x
    x = 3,983,183,549.75/70,908.48
  6. Step 6: Final answer
    x = 56,173.59

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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.