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Finding the Fourth Proportional to 8,413.88, 11,611.02 and 4,828.76

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Solution

The fourth proportional to 8,413.88, 11,611.02 and 4,828.76 is: 6,663.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.88 : 11,611.02 = 4,828.76 : x
  2. Step 2: Convert to fraction form
    8,413.88/11,611.02 = 4,828.76/x
  3. Step 3: Cross multiply
    8,413.88x = 11,611.02 × 4,828.76
  4. Step 4: Simplify right side
    8,413.88x = 56,066,832.53
  5. Step 5: Solve for x
    x = 56,066,832.53/8,413.88
  6. Step 6: Final answer
    x = 6,663.62

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Half scale
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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.