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Finding the Fourth Proportional to 642,097.98, 963,146.97 and 168,782.58

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Solution

The fourth proportional to 642,097.98, 963,146.97 and 168,782.58 is: 253,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,097.98 : 963,146.97 = 168,782.58 : x
  2. Step 2: Convert to fraction form
    642,097.98/963,146.97 = 168,782.58/x
  3. Step 3: Cross multiply
    642,097.98x = 963,146.97 × 168,782.58
  4. Step 4: Simplify right side
    642,097.98x = 162,562,430,515.78
  5. Step 5: Solve for x
    x = 162,562,430,515.78/642,097.98
  6. Step 6: Final answer
    x = 253,173.87

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Double scale
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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.