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Finding the Fourth Proportional to 393,577.77, 590,452.62 and 127,365.20

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Solution

The fourth proportional to 393,577.77, 590,452.62 and 127,365.20 is: 191,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,577.77 : 590,452.62 = 127,365.20 : x
  2. Step 2: Convert to fraction form
    393,577.77/590,452.62 = 127,365.20/x
  3. Step 3: Cross multiply
    393,577.77x = 590,452.62 × 127,365.20
  4. Step 4: Simplify right side
    393,577.77x = 75,203,116,036.82
  5. Step 5: Solve for x
    x = 75,203,116,036.82/393,577.77
  6. Step 6: Final answer
    x = 191,075.62

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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.