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Finding the Fourth Proportional to 1,968,528.16, 2,716,374.56 and 1,109,241.28

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Solution

The fourth proportional to 1,968,528.16, 2,716,374.56 and 1,109,241.28 is: 1,530,643.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968,528.16 : 2,716,374.56 = 1,109,241.28 : x
  2. Step 2: Convert to fraction form
    1,968,528.16/2,716,374.56 = 1,109,241.28/x
  3. Step 3: Cross multiply
    1,968,528.16x = 2,716,374.56 × 1,109,241.28
  4. Step 4: Simplify right side
    1,968,528.16x = 3,013,114,793,893.84
  5. Step 5: Solve for x
    x = 3,013,114,793,893.84/1,968,528.16
  6. Step 6: Final answer
    x = 1,530,643.48

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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.