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Finding the Fourth Proportional to 691,009.73, 953,580.48 and 385,079.38

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Solution

The fourth proportional to 691,009.73, 953,580.48 and 385,079.38 is: 531,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,009.73 : 953,580.48 = 385,079.38 : x
  2. Step 2: Convert to fraction form
    691,009.73/953,580.48 = 385,079.38/x
  3. Step 3: Cross multiply
    691,009.73x = 953,580.48 × 385,079.38
  4. Step 4: Simplify right side
    691,009.73x = 367,204,179,766.43
  5. Step 5: Solve for x
    x = 367,204,179,766.43/691,009.73
  6. Step 6: Final answer
    x = 531,402.33

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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.