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Finding the Fourth Proportional to 289,179.99, 433,765.53 and 78,817.32

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Solution

The fourth proportional to 289,179.99, 433,765.53 and 78,817.32 is: 118,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,179.99 : 433,765.53 = 78,817.32 : x
  2. Step 2: Convert to fraction form
    289,179.99/433,765.53 = 78,817.32/x
  3. Step 3: Cross multiply
    289,179.99x = 433,765.53 × 78,817.32
  4. Step 4: Simplify right side
    289,179.99x = 34,188,236,582.98
  5. Step 5: Solve for x
    x = 34,188,236,582.98/289,179.99
  6. Step 6: Final answer
    x = 118,224.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.