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Finding the Fourth Proportional to 73,040, 100,795.20 and 43,232

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Solution

The fourth proportional to 73,040, 100,795.20 and 43,232 is: 59,660.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,040 : 100,795.20 = 43,232 : x
  2. Step 2: Convert to fraction form
    73,040/100,795.20 = 43,232/x
  3. Step 3: Cross multiply
    73,040x = 100,795.20 × 43,232
  4. Step 4: Simplify right side
    73,040x = 4,357,578,086.40
  5. Step 5: Solve for x
    x = 4,357,578,086.40/73,040
  6. Step 6: Final answer
    x = 59,660.16

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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.