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Finding the Fourth Proportional to 686,369.52, 946,869.54 and 431,861.04

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Solution

The fourth proportional to 686,369.52, 946,869.54 and 431,861.04 is: 595,766.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,369.52 : 946,869.54 = 431,861.04 : x
  2. Step 2: Convert to fraction form
    686,369.52/946,869.54 = 431,861.04/x
  3. Step 3: Cross multiply
    686,369.52x = 946,869.54 × 431,861.04
  4. Step 4: Simplify right side
    686,369.52x = 408,916,064,288.72
  5. Step 5: Solve for x
    x = 408,916,064,288.72/686,369.52
  6. Step 6: Final answer
    x = 595,766.64

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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.