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Finding the Fourth Proportional to 299,090.21, 448,720.04 and 121,724.51

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Solution

The fourth proportional to 299,090.21, 448,720.04 and 121,724.51 is: 182,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,090.21 : 448,720.04 = 121,724.51 : x
  2. Step 2: Convert to fraction form
    299,090.21/448,720.04 = 121,724.51/x
  3. Step 3: Cross multiply
    299,090.21x = 448,720.04 × 121,724.51
  4. Step 4: Simplify right side
    299,090.21x = 54,620,225,056.89
  5. Step 5: Solve for x
    x = 54,620,225,056.89/299,090.21
  6. Step 6: Final answer
    x = 182,621.24

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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.