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Finding the Fourth Proportional to 203,302.79, 280,559.49 and 112,660.27

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Solution

The fourth proportional to 203,302.79, 280,559.49 and 112,660.27 is: 155,472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,302.79 : 280,559.49 = 112,660.27 : x
  2. Step 2: Convert to fraction form
    203,302.79/280,559.49 = 112,660.27/x
  3. Step 3: Cross multiply
    203,302.79x = 280,559.49 × 112,660.27
  4. Step 4: Simplify right side
    203,302.79x = 31,607,907,894.46
  5. Step 5: Solve for x
    x = 31,607,907,894.46/203,302.79
  6. Step 6: Final answer
    x = 155,472.08

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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.