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Finding the Fourth Proportional to 121,564.60, 181,747.48 and 103,051.24

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Solution

The fourth proportional to 121,564.60, 181,747.48 and 103,051.24 is: 154,068.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,564.60 : 181,747.48 = 103,051.24 : x
  2. Step 2: Convert to fraction form
    121,564.60/181,747.48 = 103,051.24/x
  3. Step 3: Cross multiply
    121,564.60x = 181,747.48 × 103,051.24
  4. Step 4: Simplify right side
    121,564.60x = 18,729,303,180.88
  5. Step 5: Solve for x
    x = 18,729,303,180.88/121,564.60
  6. Step 6: Final answer
    x = 154,068.73

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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.