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Finding the Fourth Proportional to 217,210,439.60, 325,815,659.40 and 217,210,439.60

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Solution

The fourth proportional to 217,210,439.60, 325,815,659.40 and 217,210,439.60 is: 325,815,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,210,439.60 : 325,815,659.40 = 217,210,439.60 : x
  2. Step 2: Convert to fraction form
    217,210,439.60/325,815,659.40 = 217,210,439.60/x
  3. Step 3: Cross multiply
    217,210,439.60x = 325,815,659.40 × 217,210,439.60
  4. Step 4: Simplify right side
    217,210,439.60x = 70,770,562,606,837,864
  5. Step 5: Solve for x
    x = 70,770,562,606,837,864/217,210,439.60
  6. Step 6: Final answer
    x = 325,815,659.40

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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.