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Finding the Fourth Proportional to 538,012.88, 805,969.44 and 419,127.56

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Solution

The fourth proportional to 538,012.88, 805,969.44 and 419,127.56 is: 627,873.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,012.88 : 805,969.44 = 419,127.56 : x
  2. Step 2: Convert to fraction form
    538,012.88/805,969.44 = 419,127.56/x
  3. Step 3: Cross multiply
    538,012.88x = 805,969.44 × 419,127.56
  4. Step 4: Simplify right side
    538,012.88x = 337,804,004,821.77
  5. Step 5: Solve for x
    x = 337,804,004,821.77/538,012.88
  6. Step 6: Final answer
    x = 627,873.45

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1.5x scale

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.