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Finding the Fourth Proportional to 121,053.60, 181,556.10 and 57,873.60

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Solution

The fourth proportional to 121,053.60, 181,556.10 and 57,873.60 is: 86,798.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,053.60 : 181,556.10 = 57,873.60 : x
  2. Step 2: Convert to fraction form
    121,053.60/181,556.10 = 57,873.60/x
  3. Step 3: Cross multiply
    121,053.60x = 181,556.10 × 57,873.60
  4. Step 4: Simplify right side
    121,053.60x = 10,507,305,108.96
  5. Step 5: Solve for x
    x = 10,507,305,108.96/121,053.60
  6. Step 6: Final answer
    x = 86,798.78

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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.