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Finding the Fourth Proportional to 72,501,907,858.40, 108,752,861,787.60 and 72,501,907,858.40

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Solution

The fourth proportional to 72,501,907,858.40, 108,752,861,787.60 and 72,501,907,858.40 is: 108,752,861,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,501,907,858.40 : 108,752,861,787.60 = 72,501,907,858.40 : x
  2. Step 2: Convert to fraction form
    72,501,907,858.40/108,752,861,787.60 = 72,501,907,858.40/x
  3. Step 3: Cross multiply
    72,501,907,858.40x = 108,752,861,787.60 × 72,501,907,858.40
  4. Step 4: Simplify right side
    72,501,907,858.40x = 7,884,789,964,661,885,763,584
  5. Step 5: Solve for x
    x = 7,884,789,964,661,885,763,584/72,501,907,858.40
  6. Step 6: Final answer
    x = 108,752,861,787.60

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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.