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Finding the Fourth Proportional to 155,405,958.10, 217,886,846.30 and 155,405,958.10

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Solution

The fourth proportional to 155,405,958.10, 217,886,846.30 and 155,405,958.10 is: 217,886,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,405,958.10 : 217,886,846.30 = 155,405,958.10 : x
  2. Step 2: Convert to fraction form
    155,405,958.10/217,886,846.30 = 155,405,958.10/x
  3. Step 3: Cross multiply
    155,405,958.10x = 217,886,846.30 × 155,405,958.10
  4. Step 4: Simplify right side
    155,405,958.10x = 33,860,914,106,638,940
  5. Step 5: Solve for x
    x = 33,860,914,106,638,940/155,405,958.10
  6. Step 6: Final answer
    x = 217,886,846.30

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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.