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Finding the Fourth Proportional to 208,758.88, 288,087.90 and 113,266.36

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Solution

The fourth proportional to 208,758.88, 288,087.90 and 113,266.36 is: 156,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,758.88 : 288,087.90 = 113,266.36 : x
  2. Step 2: Convert to fraction form
    208,758.88/288,087.90 = 113,266.36/x
  3. Step 3: Cross multiply
    208,758.88x = 288,087.90 × 113,266.36
  4. Step 4: Simplify right side
    208,758.88x = 32,630,667,793.04
  5. Step 5: Solve for x
    x = 32,630,667,793.04/208,758.88
  6. Step 6: Final answer
    x = 156,307.93

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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.