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Finding the Fourth Proportional to 137,339, 206,009.79 and 48,607.55

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Solution

The fourth proportional to 137,339, 206,009.79 and 48,607.55 is: 72,911.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,339 : 206,009.79 = 48,607.55 : x
  2. Step 2: Convert to fraction form
    137,339/206,009.79 = 48,607.55/x
  3. Step 3: Cross multiply
    137,339x = 206,009.79 × 48,607.55
  4. Step 4: Simplify right side
    137,339x = 10,013,630,924.88
  5. Step 5: Solve for x
    x = 10,013,630,924.88/137,339
  6. Step 6: Final answer
    x = 72,911.78

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1.5x scale

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.