Home / 641,981.76-963,132.75-192,710.94

Finding the Fourth Proportional to 641,981.76, 963,132.75 and 192,710.94

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Solution

The fourth proportional to 641,981.76, 963,132.75 and 192,710.94 is: 289,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,981.76 : 963,132.75 = 192,710.94 : x
  2. Step 2: Convert to fraction form
    641,981.76/963,132.75 = 192,710.94/x
  3. Step 3: Cross multiply
    641,981.76x = 963,132.75 × 192,710.94
  4. Step 4: Simplify right side
    641,981.76x = 185,606,217,597.29
  5. Step 5: Solve for x
    x = 185,606,217,597.29/641,981.76
  6. Step 6: Final answer
    x = 289,114.47

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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.