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Finding the Fourth Proportional to 415,253.88, 620,605.26 and 303,170.16

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Solution

The fourth proportional to 415,253.88, 620,605.26 and 303,170.16 is: 453,093.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,253.88 : 620,605.26 = 303,170.16 : x
  2. Step 2: Convert to fraction form
    415,253.88/620,605.26 = 303,170.16/x
  3. Step 3: Cross multiply
    415,253.88x = 620,605.26 × 303,170.16
  4. Step 4: Simplify right side
    415,253.88x = 188,148,995,971.04
  5. Step 5: Solve for x
    x = 188,148,995,971.04/415,253.88
  6. Step 6: Final answer
    x = 453,093.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.