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Finding the Fourth Proportional to 203,784.40, 305,676.60 and 56,040.40

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Solution

The fourth proportional to 203,784.40, 305,676.60 and 56,040.40 is: 84,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,784.40 : 305,676.60 = 56,040.40 : x
  2. Step 2: Convert to fraction form
    203,784.40/305,676.60 = 56,040.40/x
  3. Step 3: Cross multiply
    203,784.40x = 305,676.60 × 56,040.40
  4. Step 4: Simplify right side
    203,784.40x = 17,130,238,934.64
  5. Step 5: Solve for x
    x = 17,130,238,934.64/203,784.40
  6. Step 6: Final answer
    x = 84,060.60

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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.