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Finding the Fourth Proportional to 131,191.58, 196,533.70 and 109,878.58

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Solution

The fourth proportional to 131,191.58, 196,533.70 and 109,878.58 is: 164,605.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,191.58 : 196,533.70 = 109,878.58 : x
  2. Step 2: Convert to fraction form
    131,191.58/196,533.70 = 109,878.58/x
  3. Step 3: Cross multiply
    131,191.58x = 196,533.70 × 109,878.58
  4. Step 4: Simplify right side
    131,191.58x = 21,594,843,878.15
  5. Step 5: Solve for x
    x = 21,594,843,878.15/131,191.58
  6. Step 6: Final answer
    x = 164,605.41

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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.