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Finding the Fourth Proportional to 691,082.57, 953,771.40 and 385,186.88

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Solution

The fourth proportional to 691,082.57, 953,771.40 and 385,186.88 is: 531,601.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,082.57 : 953,771.40 = 385,186.88 : x
  2. Step 2: Convert to fraction form
    691,082.57/953,771.40 = 385,186.88/x
  3. Step 3: Cross multiply
    691,082.57x = 953,771.40 × 385,186.88
  4. Step 4: Simplify right side
    691,082.57x = 367,380,225,030.38
  5. Step 5: Solve for x
    x = 367,380,225,030.38/691,082.57
  6. Step 6: Final answer
    x = 531,601.06

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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.