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Finding the Fourth Proportional to 415,548.50, 623,426.43 and 120,060.50

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Solution

The fourth proportional to 415,548.50, 623,426.43 and 120,060.50 is: 180,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,548.50 : 623,426.43 = 120,060.50 : x
  2. Step 2: Convert to fraction form
    415,548.50/623,426.43 = 120,060.50/x
  3. Step 3: Cross multiply
    415,548.50x = 623,426.43 × 120,060.50
  4. Step 4: Simplify right side
    415,548.50x = 74,848,888,899.02
  5. Step 5: Solve for x
    x = 74,848,888,899.02/415,548.50
  6. Step 6: Final answer
    x = 180,120.71

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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.