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Finding the Fourth Proportional to 615,046,507.56, 848,763,626.98 and 347,178,735.40

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Solution

The fourth proportional to 615,046,507.56, 848,763,626.98 and 347,178,735.40 is: 479,106,342.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,046,507.56 : 848,763,626.98 = 347,178,735.40 : x
  2. Step 2: Convert to fraction form
    615,046,507.56/848,763,626.98 = 347,178,735.40/x
  3. Step 3: Cross multiply
    615,046,507.56x = 848,763,626.98 × 347,178,735.40
  4. Step 4: Simplify right side
    615,046,507.56x = 294,672,682,668,433,728
  5. Step 5: Solve for x
    x = 294,672,682,668,433,728/615,046,507.56
  6. Step 6: Final answer
    x = 479,106,342.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.