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Finding the Fourth Proportional to 613,208,045.70, 919,812,068.55 and 565,856,652.60

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Solution

The fourth proportional to 613,208,045.70, 919,812,068.55 and 565,856,652.60 is: 848,784,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,208,045.70 : 919,812,068.55 = 565,856,652.60 : x
  2. Step 2: Convert to fraction form
    613,208,045.70/919,812,068.55 = 565,856,652.60/x
  3. Step 3: Cross multiply
    613,208,045.70x = 919,812,068.55 × 565,856,652.60
  4. Step 4: Simplify right side
    613,208,045.70x = 520,481,778,130,784,704
  5. Step 5: Solve for x
    x = 520,481,778,130,784,704/613,208,045.70
  6. Step 6: Final answer
    x = 848,784,978.90

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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.