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Finding the Fourth Proportional to 181,990.53, 251,143.52 and 101,416.28

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Solution

The fourth proportional to 181,990.53, 251,143.52 and 101,416.28 is: 139,952.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,990.53 : 251,143.52 = 101,416.28 : x
  2. Step 2: Convert to fraction form
    181,990.53/251,143.52 = 101,416.28/x
  3. Step 3: Cross multiply
    181,990.53x = 251,143.52 × 101,416.28
  4. Step 4: Simplify right side
    181,990.53x = 25,470,041,544.51
  5. Step 5: Solve for x
    x = 25,470,041,544.51/181,990.53
  6. Step 6: Final answer
    x = 139,952.57

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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.