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Finding the Fourth Proportional to 531,690.87, 733,751.22 and 289,986.67

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Solution

The fourth proportional to 531,690.87, 733,751.22 and 289,986.67 is: 400,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,690.87 : 733,751.22 = 289,986.67 : x
  2. Step 2: Convert to fraction form
    531,690.87/733,751.22 = 289,986.67/x
  3. Step 3: Cross multiply
    531,690.87x = 733,751.22 × 289,986.67
  4. Step 4: Simplify right side
    531,690.87x = 212,778,072,896.24
  5. Step 5: Solve for x
    x = 212,778,072,896.24/531,690.87
  6. Step 6: Final answer
    x = 400,191.32

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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.