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Finding the Fourth Proportional to 368,478.14, 552,388.48 and 143,786.32

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Solution

The fourth proportional to 368,478.14, 552,388.48 and 143,786.32 is: 215,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,478.14 : 552,388.48 = 143,786.32 : x
  2. Step 2: Convert to fraction form
    368,478.14/552,388.48 = 143,786.32/x
  3. Step 3: Cross multiply
    368,478.14x = 552,388.48 × 143,786.32
  4. Step 4: Simplify right side
    368,478.14x = 79,425,905,009.16
  5. Step 5: Solve for x
    x = 79,425,905,009.16/368,478.14
  6. Step 6: Final answer
    x = 215,551.20

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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.