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Finding the Fourth Proportional to 298,091.20, 447,007.20 and 98,334.40

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Solution

The fourth proportional to 298,091.20, 447,007.20 and 98,334.40 is: 147,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,091.20 : 447,007.20 = 98,334.40 : x
  2. Step 2: Convert to fraction form
    298,091.20/447,007.20 = 98,334.40/x
  3. Step 3: Cross multiply
    298,091.20x = 447,007.20 × 98,334.40
  4. Step 4: Simplify right side
    298,091.20x = 43,956,184,807.68
  5. Step 5: Solve for x
    x = 43,956,184,807.68/298,091.20
  6. Step 6: Final answer
    x = 147,458.85

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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.