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Finding the Fourth Proportional to 1,971,608.94, 2,718,355.01 and 1,645,391.16

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Solution

The fourth proportional to 1,971,608.94, 2,718,355.01 and 1,645,391.16 is: 2,268,582.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,608.94 : 2,718,355.01 = 1,645,391.16 : x
  2. Step 2: Convert to fraction form
    1,971,608.94/2,718,355.01 = 1,645,391.16/x
  3. Step 3: Cross multiply
    1,971,608.94x = 2,718,355.01 × 1,645,391.16
  4. Step 4: Simplify right side
    1,971,608.94x = 4,472,757,294,968.76
  5. Step 5: Solve for x
    x = 4,472,757,294,968.76/1,971,608.94
  6. Step 6: Final answer
    x = 2,268,582.38

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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.