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Finding the Fourth Proportional to 146,603.70, 219,905.55 and 130,857.30

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Solution

The fourth proportional to 146,603.70, 219,905.55 and 130,857.30 is: 196,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,603.70 : 219,905.55 = 130,857.30 : x
  2. Step 2: Convert to fraction form
    146,603.70/219,905.55 = 130,857.30/x
  3. Step 3: Cross multiply
    146,603.70x = 219,905.55 × 130,857.30
  4. Step 4: Simplify right side
    146,603.70x = 28,776,246,528.02
  5. Step 5: Solve for x
    x = 28,776,246,528.02/146,603.70
  6. Step 6: Final answer
    x = 196,285.95

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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.