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Finding the Fourth Proportional to 70,398.41, 105,596.66 and 17,090.81

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Solution

The fourth proportional to 70,398.41, 105,596.66 and 17,090.81 is: 25,635.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,398.41 : 105,596.66 = 17,090.81 : x
  2. Step 2: Convert to fraction form
    70,398.41/105,596.66 = 17,090.81/x
  3. Step 3: Cross multiply
    70,398.41x = 105,596.66 × 17,090.81
  4. Step 4: Simplify right side
    70,398.41x = 1,804,731,967.44
  5. Step 5: Solve for x
    x = 1,804,731,967.44/70,398.41
  6. Step 6: Final answer
    x = 25,635.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.