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Finding the Fourth Proportional to 181,987.78, 251,140.53 and 101,418.70

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Solution

The fourth proportional to 181,987.78, 251,140.53 and 101,418.70 is: 139,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,987.78 : 251,140.53 = 101,418.70 : x
  2. Step 2: Convert to fraction form
    181,987.78/251,140.53 = 101,418.70/x
  3. Step 3: Cross multiply
    181,987.78x = 251,140.53 × 101,418.70
  4. Step 4: Simplify right side
    181,987.78x = 25,470,346,069.91
  5. Step 5: Solve for x
    x = 25,470,346,069.91/181,987.78
  6. Step 6: Final answer
    x = 139,956.35

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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.