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Finding the Fourth Proportional to 641,181.33, 884,856.29 and 354,696.48

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Solution

The fourth proportional to 641,181.33, 884,856.29 and 354,696.48 is: 489,495.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,181.33 : 884,856.29 = 354,696.48 : x
  2. Step 2: Convert to fraction form
    641,181.33/884,856.29 = 354,696.48/x
  3. Step 3: Cross multiply
    641,181.33x = 884,856.29 × 354,696.48
  4. Step 4: Simplify right side
    641,181.33x = 313,855,409,595.38
  5. Step 5: Solve for x
    x = 313,855,409,595.38/641,181.33
  6. Step 6: Final answer
    x = 489,495.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.