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Finding the Fourth Proportional to 613,045.21, 919,700.16 and 186,614.38

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Solution

The fourth proportional to 613,045.21, 919,700.16 and 186,614.38 is: 279,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,045.21 : 919,700.16 = 186,614.38 : x
  2. Step 2: Convert to fraction form
    613,045.21/919,700.16 = 186,614.38/x
  3. Step 3: Cross multiply
    613,045.21x = 919,700.16 × 186,614.38
  4. Step 4: Simplify right side
    613,045.21x = 171,629,270,545.80
  5. Step 5: Solve for x
    x = 171,629,270,545.80/613,045.21
  6. Step 6: Final answer
    x = 279,961.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.