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Finding the Fourth Proportional to 111,896.96, 154,413.20 and 64,117.04

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Solution

The fourth proportional to 111,896.96, 154,413.20 and 64,117.04 is: 88,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,896.96 : 154,413.20 = 64,117.04 : x
  2. Step 2: Convert to fraction form
    111,896.96/154,413.20 = 64,117.04/x
  3. Step 3: Cross multiply
    111,896.96x = 154,413.20 × 64,117.04
  4. Step 4: Simplify right side
    111,896.96x = 9,900,517,320.93
  5. Step 5: Solve for x
    x = 9,900,517,320.93/111,896.96
  6. Step 6: Final answer
    x = 88,478.88

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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.