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Finding the Fourth Proportional to 691,233.31, 953,807.81 and 385,273.38

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Solution

The fourth proportional to 691,233.31, 953,807.81 and 385,273.38 is: 531,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,233.31 : 953,807.81 = 385,273.38 : x
  2. Step 2: Convert to fraction form
    691,233.31/953,807.81 = 385,273.38/x
  3. Step 3: Cross multiply
    691,233.31x = 953,807.81 × 385,273.38
  4. Step 4: Simplify right side
    691,233.31x = 367,476,758,829.10
  5. Step 5: Solve for x
    x = 367,476,758,829.10/691,233.31
  6. Step 6: Final answer
    x = 531,624.78

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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.