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Finding the Fourth Proportional to 1,965,804.64, 2,713,647.20 and 1,321,598.32

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Solution

The fourth proportional to 1,965,804.64, 2,713,647.20 and 1,321,598.32 is: 1,824,368.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965,804.64 : 2,713,647.20 = 1,321,598.32 : x
  2. Step 2: Convert to fraction form
    1,965,804.64/2,713,647.20 = 1,321,598.32/x
  3. Step 3: Cross multiply
    1,965,804.64x = 2,713,647.20 × 1,321,598.32
  4. Step 4: Simplify right side
    1,965,804.64x = 3,586,351,580,592.70
  5. Step 5: Solve for x
    x = 3,586,351,580,592.70/1,965,804.64
  6. Step 6: Final answer
    x = 1,824,368.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.