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Finding the Fourth Proportional to 181,991.71, 251,148.80 and 101,417.47

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Solution

The fourth proportional to 181,991.71, 251,148.80 and 101,417.47 is: 139,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,991.71 : 251,148.80 = 101,417.47 : x
  2. Step 2: Convert to fraction form
    181,991.71/251,148.80 = 101,417.47/x
  3. Step 3: Cross multiply
    181,991.71x = 251,148.80 × 101,417.47
  4. Step 4: Simplify right side
    181,991.71x = 25,470,875,515.21
  5. Step 5: Solve for x
    x = 25,470,875,515.21/181,991.71
  6. Step 6: Final answer
    x = 139,956.24

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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.