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Finding the Fourth Proportional to 104,860.78, 157,316.01 and 45,707.02

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Solution

The fourth proportional to 104,860.78, 157,316.01 and 45,707.02 is: 68,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,860.78 : 157,316.01 = 45,707.02 : x
  2. Step 2: Convert to fraction form
    104,860.78/157,316.01 = 45,707.02/x
  3. Step 3: Cross multiply
    104,860.78x = 157,316.01 × 45,707.02
  4. Step 4: Simplify right side
    104,860.78x = 7,190,446,015.39
  5. Step 5: Solve for x
    x = 7,190,446,015.39/104,860.78
  6. Step 6: Final answer
    x = 68,571.36

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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.