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Finding the Fourth Proportional to 217,211,431.40, 325,817,147.10 and 217,211,431.40

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Solution

The fourth proportional to 217,211,431.40, 325,817,147.10 and 217,211,431.40 is: 325,817,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,211,431.40 : 325,817,147.10 = 217,211,431.40 : x
  2. Step 2: Convert to fraction form
    217,211,431.40/325,817,147.10 = 217,211,431.40/x
  3. Step 3: Cross multiply
    217,211,431.40x = 325,817,147.10 × 217,211,431.40
  4. Step 4: Simplify right side
    217,211,431.40x = 70,771,208,896,255,368
  5. Step 5: Solve for x
    x = 70,771,208,896,255,368/217,211,431.40
  6. Step 6: Final answer
    x = 325,817,147.10

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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.