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Finding the Fourth Proportional to 181,969.76, 251,119.91 and 100,293.53

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Solution

The fourth proportional to 181,969.76, 251,119.91 and 100,293.53 is: 138,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,969.76 : 251,119.91 = 100,293.53 : x
  2. Step 2: Convert to fraction form
    181,969.76/251,119.91 = 100,293.53/x
  3. Step 3: Cross multiply
    181,969.76x = 251,119.91 × 100,293.53
  4. Step 4: Simplify right side
    181,969.76x = 25,185,701,222.32
  5. Step 5: Solve for x
    x = 25,185,701,222.32/181,969.76
  6. Step 6: Final answer
    x = 138,405.97

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1.5x scale

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.