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Finding the Fourth Proportional to 203,302.86, 280,559.60 and 112,660.35

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Solution

The fourth proportional to 203,302.86, 280,559.60 and 112,660.35 is: 155,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,302.86 : 280,559.60 = 112,660.35 : x
  2. Step 2: Convert to fraction form
    203,302.86/280,559.60 = 112,660.35/x
  3. Step 3: Cross multiply
    203,302.86x = 280,559.60 × 112,660.35
  4. Step 4: Simplify right side
    203,302.86x = 31,607,942,731.86
  5. Step 5: Solve for x
    x = 31,607,942,731.86/203,302.86
  6. Step 6: Final answer
    x = 155,472.20

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1.5x scale

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.