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Finding the Fourth Proportional to 98,009.40, 146,898.90 and 51,238.20

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Solution

The fourth proportional to 98,009.40, 146,898.90 and 51,238.20 is: 76,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,009.40 : 146,898.90 = 51,238.20 : x
  2. Step 2: Convert to fraction form
    98,009.40/146,898.90 = 51,238.20/x
  3. Step 3: Cross multiply
    98,009.40x = 146,898.90 × 51,238.20
  4. Step 4: Simplify right side
    98,009.40x = 7,526,835,217.98
  5. Step 5: Solve for x
    x = 7,526,835,217.98/98,009.40
  6. Step 6: Final answer
    x = 76,797.07

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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.