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Finding the Fourth Proportional to 691,082.15, 953,698.10 and 385,178.24

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Solution

The fourth proportional to 691,082.15, 953,698.10 and 385,178.24 is: 531,548.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,082.15 : 953,698.10 = 385,178.24 : x
  2. Step 2: Convert to fraction form
    691,082.15/953,698.10 = 385,178.24/x
  3. Step 3: Cross multiply
    691,082.15x = 953,698.10 × 385,178.24
  4. Step 4: Simplify right side
    691,082.15x = 367,343,758,996.54
  5. Step 5: Solve for x
    x = 367,343,758,996.54/691,082.15
  6. Step 6: Final answer
    x = 531,548.61

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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.