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Finding the Fourth Proportional to 642,098.36, 963,147.54 and 168,782.96

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Solution

The fourth proportional to 642,098.36, 963,147.54 and 168,782.96 is: 253,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,098.36 : 963,147.54 = 168,782.96 : x
  2. Step 2: Convert to fraction form
    642,098.36/963,147.54 = 168,782.96/x
  3. Step 3: Cross multiply
    642,098.36x = 963,147.54 × 168,782.96
  4. Step 4: Simplify right side
    642,098.36x = 162,562,887,902.18
  5. Step 5: Solve for x
    x = 162,562,887,902.18/642,098.36
  6. Step 6: Final answer
    x = 253,174.43

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Similar ratio
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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.