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Finding the Fourth Proportional to 212,617,611.20, 297,866,209.60 and 212,617,611.20

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Solution

The fourth proportional to 212,617,611.20, 297,866,209.60 and 212,617,611.20 is: 297,866,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,617,611.20 : 297,866,209.60 = 212,617,611.20 : x
  2. Step 2: Convert to fraction form
    212,617,611.20/297,866,209.60 = 212,617,611.20/x
  3. Step 3: Cross multiply
    212,617,611.20x = 297,866,209.60 × 212,617,611.20
  4. Step 4: Simplify right side
    212,617,611.20x = 63,331,601,942,350,512
  5. Step 5: Solve for x
    x = 63,331,601,942,350,512/212,617,611.20
  6. Step 6: Final answer
    x = 297,866,209.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.