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Finding the Fourth Proportional to 691,081.82, 953,770.37 and 385,186.13

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Solution

The fourth proportional to 691,081.82, 953,770.37 and 385,186.13 is: 531,600.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,081.82 : 953,770.37 = 385,186.13 : x
  2. Step 2: Convert to fraction form
    691,081.82/953,770.37 = 385,186.13/x
  3. Step 3: Cross multiply
    691,081.82x = 953,770.37 × 385,186.13
  4. Step 4: Simplify right side
    691,081.82x = 367,379,111,034.19
  5. Step 5: Solve for x
    x = 367,379,111,034.19/691,081.82
  6. Step 6: Final answer
    x = 531,600.03

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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.