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Finding the Fourth Proportional to 197,843.94, 272,803.84 and 143,288.21

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Solution

The fourth proportional to 197,843.94, 272,803.84 and 143,288.21 is: 197,577.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,843.94 : 272,803.84 = 143,288.21 : x
  2. Step 2: Convert to fraction form
    197,843.94/272,803.84 = 143,288.21/x
  3. Step 3: Cross multiply
    197,843.94x = 272,803.84 × 143,288.21
  4. Step 4: Simplify right side
    197,843.94x = 39,089,574,238.52
  5. Step 5: Solve for x
    x = 39,089,574,238.52/197,843.94
  6. Step 6: Final answer
    x = 197,577.82

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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.