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Finding the Fourth Proportional to 181,356.60, 250,257.78 and 100,782.84

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Solution

The fourth proportional to 181,356.60, 250,257.78 and 100,782.84 is: 139,072.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,356.60 : 250,257.78 = 100,782.84 : x
  2. Step 2: Convert to fraction form
    181,356.60/250,257.78 = 100,782.84/x
  3. Step 3: Cross multiply
    181,356.60x = 250,257.78 × 100,782.84
  4. Step 4: Simplify right side
    181,356.60x = 25,221,689,800.50
  5. Step 5: Solve for x
    x = 25,221,689,800.50/181,356.60
  6. Step 6: Final answer
    x = 139,072.36

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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.