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Finding the Fourth Proportional to 719,208,004.80, 1,078,812,007.20 and 719,208,004.80

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Solution

The fourth proportional to 719,208,004.80, 1,078,812,007.20 and 719,208,004.80 is: 1,078,812,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,208,004.80 : 1,078,812,007.20 = 719,208,004.80 : x
  2. Step 2: Convert to fraction form
    719,208,004.80/1,078,812,007.20 = 719,208,004.80/x
  3. Step 3: Cross multiply
    719,208,004.80x = 1,078,812,007.20 × 719,208,004.80
  4. Step 4: Simplify right side
    719,208,004.80x = 775,890,231,252,595,200
  5. Step 5: Solve for x
    x = 775,890,231,252,595,200/719,208,004.80
  6. Step 6: Final answer
    x = 1,078,812,007.20

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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.