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Finding the Fourth Proportional to 692,896.84, 956,190.42 and 391,103.56

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Solution

The fourth proportional to 692,896.84, 956,190.42 and 391,103.56 is: 539,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,896.84 : 956,190.42 = 391,103.56 : x
  2. Step 2: Convert to fraction form
    692,896.84/956,190.42 = 391,103.56/x
  3. Step 3: Cross multiply
    692,896.84x = 956,190.42 × 391,103.56
  4. Step 4: Simplify right side
    692,896.84x = 373,969,477,299.90
  5. Step 5: Solve for x
    x = 373,969,477,299.90/692,896.84
  6. Step 6: Final answer
    x = 539,718.84

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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.