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Finding the Fourth Proportional to 656,328.61, 905,728.10 and 365,936.72

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Solution

The fourth proportional to 656,328.61, 905,728.10 and 365,936.72 is: 504,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,328.61 : 905,728.10 = 365,936.72 : x
  2. Step 2: Convert to fraction form
    656,328.61/905,728.10 = 365,936.72/x
  3. Step 3: Cross multiply
    656,328.61x = 905,728.10 × 365,936.72
  4. Step 4: Simplify right side
    656,328.61x = 331,439,170,560.47
  5. Step 5: Solve for x
    x = 331,439,170,560.47/656,328.61
  6. Step 6: Final answer
    x = 504,989.68

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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.