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Finding the Fourth Proportional to 447,653.89, 617,742.21 and 243,699.59

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Solution

The fourth proportional to 447,653.89, 617,742.21 and 243,699.59 is: 336,294.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,653.89 : 617,742.21 = 243,699.59 : x
  2. Step 2: Convert to fraction form
    447,653.89/617,742.21 = 243,699.59/x
  3. Step 3: Cross multiply
    447,653.89x = 617,742.21 × 243,699.59
  4. Step 4: Simplify right side
    447,653.89x = 150,543,523,302.69
  5. Step 5: Solve for x
    x = 150,543,523,302.69/447,653.89
  6. Step 6: Final answer
    x = 336,294.46

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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.