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Finding the Fourth Proportional to 289,595.96, 399,405.48 and 203,838.83

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Solution

The fourth proportional to 289,595.96, 399,405.48 and 203,838.83 is: 281,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,595.96 : 399,405.48 = 203,838.83 : x
  2. Step 2: Convert to fraction form
    289,595.96/399,405.48 = 203,838.83/x
  3. Step 3: Cross multiply
    289,595.96x = 399,405.48 × 203,838.83
  4. Step 4: Simplify right side
    289,595.96x = 81,414,345,738.79
  5. Step 5: Solve for x
    x = 81,414,345,738.79/289,595.96
  6. Step 6: Final answer
    x = 281,130.81

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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.