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Finding the Fourth Proportional to 373,182.21, 559,441.81 and 145,425.11

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Solution

The fourth proportional to 373,182.21, 559,441.81 and 145,425.11 is: 218,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,182.21 : 559,441.81 = 145,425.11 : x
  2. Step 2: Convert to fraction form
    373,182.21/559,441.81 = 145,425.11/x
  3. Step 3: Cross multiply
    373,182.21x = 559,441.81 × 145,425.11
  4. Step 4: Simplify right side
    373,182.21x = 81,356,884,142.42
  5. Step 5: Solve for x
    x = 81,356,884,142.42/373,182.21
  6. Step 6: Final answer
    x = 218,008.47

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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.