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Finding the Fourth Proportional to 289,771.50, 399,886.11 and 168,996.54

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Solution

The fourth proportional to 289,771.50, 399,886.11 and 168,996.54 is: 233,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,771.50 : 399,886.11 = 168,996.54 : x
  2. Step 2: Convert to fraction form
    289,771.50/399,886.11 = 168,996.54/x
  3. Step 3: Cross multiply
    289,771.50x = 399,886.11 × 168,996.54
  4. Step 4: Simplify right side
    289,771.50x = 67,579,368,984.06
  5. Step 5: Solve for x
    x = 67,579,368,984.06/289,771.50
  6. Step 6: Final answer
    x = 233,216.07

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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.