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Finding the Fourth Proportional to 850,329,619.20, 1,273,478,889.60 and 850,329,619.20

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Solution

The fourth proportional to 850,329,619.20, 1,273,478,889.60 and 850,329,619.20 is: 1,273,478,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,329,619.20 : 1,273,478,889.60 = 850,329,619.20 : x
  2. Step 2: Convert to fraction form
    850,329,619.20/1,273,478,889.60 = 850,329,619.20/x
  3. Step 3: Cross multiply
    850,329,619.20x = 1,273,478,889.60 × 850,329,619.20
  4. Step 4: Simplify right side
    850,329,619.20x = 1,082,876,819,252,806,784
  5. Step 5: Solve for x
    x = 1,082,876,819,252,806,784/850,329,619.20
  6. Step 6: Final answer
    x = 1,273,478,889.60

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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.