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Finding the Fourth Proportional to 538,477.20, 805,966.20 and 419,504.40

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Solution

The fourth proportional to 538,477.20, 805,966.20 and 419,504.40 is: 627,893.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,477.20 : 805,966.20 = 419,504.40 : x
  2. Step 2: Convert to fraction form
    538,477.20/805,966.20 = 419,504.40/x
  3. Step 3: Cross multiply
    538,477.20x = 805,966.20 × 419,504.40
  4. Step 4: Simplify right side
    538,477.20x = 338,106,367,151.28
  5. Step 5: Solve for x
    x = 338,106,367,151.28/538,477.20
  6. Step 6: Final answer
    x = 627,893.56

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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.