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Finding the Fourth Proportional to 822,896.60, 1,234,344.90 and 290,413.40

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Solution

The fourth proportional to 822,896.60, 1,234,344.90 and 290,413.40 is: 435,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,896.60 : 1,234,344.90 = 290,413.40 : x
  2. Step 2: Convert to fraction form
    822,896.60/1,234,344.90 = 290,413.40/x
  3. Step 3: Cross multiply
    822,896.60x = 1,234,344.90 × 290,413.40
  4. Step 4: Simplify right side
    822,896.60x = 358,470,299,181.66
  5. Step 5: Solve for x
    x = 358,470,299,181.66/822,896.60
  6. Step 6: Final answer
    x = 435,620.10

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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.