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Finding the Fourth Proportional to 289,483.77, 399,483.22 and 162,163.92

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Solution

The fourth proportional to 289,483.77, 399,483.22 and 162,163.92 is: 223,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,483.77 : 399,483.22 = 162,163.92 : x
  2. Step 2: Convert to fraction form
    289,483.77/399,483.22 = 162,163.92/x
  3. Step 3: Cross multiply
    289,483.77x = 399,483.22 × 162,163.92
  4. Step 4: Simplify right side
    289,483.77x = 64,781,764,929.42
  5. Step 5: Solve for x
    x = 64,781,764,929.42/289,483.77
  6. Step 6: Final answer
    x = 223,783.75

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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.