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Finding the Fourth Proportional to 531,621.84, 733,655.85 and 289,917.60

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Solution

The fourth proportional to 531,621.84, 733,655.85 and 289,917.60 is: 400,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,621.84 : 733,655.85 = 289,917.60 : x
  2. Step 2: Convert to fraction form
    531,621.84/733,655.85 = 289,917.60/x
  3. Step 3: Cross multiply
    531,621.84x = 733,655.85 × 289,917.60
  4. Step 4: Simplify right side
    531,621.84x = 212,699,743,257.96
  5. Step 5: Solve for x
    x = 212,699,743,257.96/531,621.84
  6. Step 6: Final answer
    x = 400,095.95

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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.