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Finding the Fourth Proportional to 319,560.64, 441,153.47 and 198,740.86

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Solution

The fourth proportional to 319,560.64, 441,153.47 and 198,740.86 is: 274,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,560.64 : 441,153.47 = 198,740.86 : x
  2. Step 2: Convert to fraction form
    319,560.64/441,153.47 = 198,740.86/x
  3. Step 3: Cross multiply
    319,560.64x = 441,153.47 × 198,740.86
  4. Step 4: Simplify right side
    319,560.64x = 87,675,220,019.78
  5. Step 5: Solve for x
    x = 87,675,220,019.78/319,560.64
  6. Step 6: Final answer
    x = 274,361.76

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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.