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Finding the Fourth Proportional to 368,151.22, 552,090.09 and 128,203.50

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Solution

The fourth proportional to 368,151.22, 552,090.09 and 128,203.50 is: 192,257.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,151.22 : 552,090.09 = 128,203.50 : x
  2. Step 2: Convert to fraction form
    368,151.22/552,090.09 = 128,203.50/x
  3. Step 3: Cross multiply
    368,151.22x = 552,090.09 × 128,203.50
  4. Step 4: Simplify right side
    368,151.22x = 70,779,881,853.32
  5. Step 5: Solve for x
    x = 70,779,881,853.32/368,151.22
  6. Step 6: Final answer
    x = 192,257.63

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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.