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Finding the Fourth Proportional to 57,696,563.80, 86,544,845.70 and 19,359,328.60

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Solution

The fourth proportional to 57,696,563.80, 86,544,845.70 and 19,359,328.60 is: 29,038,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,696,563.80 : 86,544,845.70 = 19,359,328.60 : x
  2. Step 2: Convert to fraction form
    57,696,563.80/86,544,845.70 = 19,359,328.60/x
  3. Step 3: Cross multiply
    57,696,563.80x = 86,544,845.70 × 19,359,328.60
  4. Step 4: Simplify right side
    57,696,563.80x = 1,675,450,106,542,597.25
  5. Step 5: Solve for x
    x = 1,675,450,106,542,597.25/57,696,563.80
  6. Step 6: Final answer
    x = 29,038,992.90

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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.