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Finding the Fourth Proportional to 57,959,999.70, 86,939,999.55 and 40,953,887.70

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Solution

The fourth proportional to 57,959,999.70, 86,939,999.55 and 40,953,887.70 is: 61,430,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,959,999.70 : 86,939,999.55 = 40,953,887.70 : x
  2. Step 2: Convert to fraction form
    57,959,999.70/86,939,999.55 = 40,953,887.70/x
  3. Step 3: Cross multiply
    57,959,999.70x = 86,939,999.55 × 40,953,887.70
  4. Step 4: Simplify right side
    57,959,999.70x = 3,560,530,978,208,750.50
  5. Step 5: Solve for x
    x = 3,560,530,978,208,750.50/57,959,999.70
  6. Step 6: Final answer
    x = 61,430,831.55

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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.