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Finding the Fourth Proportional to 181,721.99, 250,776.35 and 101,147.78

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Solution

The fourth proportional to 181,721.99, 250,776.35 and 101,147.78 is: 139,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,721.99 : 250,776.35 = 101,147.78 : x
  2. Step 2: Convert to fraction form
    181,721.99/250,776.35 = 101,147.78/x
  3. Step 3: Cross multiply
    181,721.99x = 250,776.35 × 101,147.78
  4. Step 4: Simplify right side
    181,721.99x = 25,365,471,958.81
  5. Step 5: Solve for x
    x = 25,365,471,958.81/181,721.99
  6. Step 6: Final answer
    x = 139,583.94

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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.