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Finding the Fourth Proportional to 268,337.10, 402,505.65 and 163,361.10

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Solution

The fourth proportional to 268,337.10, 402,505.65 and 163,361.10 is: 245,041.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,337.10 : 402,505.65 = 163,361.10 : x
  2. Step 2: Convert to fraction form
    268,337.10/402,505.65 = 163,361.10/x
  3. Step 3: Cross multiply
    268,337.10x = 402,505.65 × 163,361.10
  4. Step 4: Simplify right side
    268,337.10x = 65,753,765,740.22
  5. Step 5: Solve for x
    x = 65,753,765,740.22/268,337.10
  6. Step 6: Final answer
    x = 245,041.65

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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.