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Finding the Fourth Proportional to 1,943,957.61, 2,917,237.95 and 806,720.94

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Solution

The fourth proportional to 1,943,957.61, 2,917,237.95 and 806,720.94 is: 1,210,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943,957.61 : 2,917,237.95 = 806,720.94 : x
  2. Step 2: Convert to fraction form
    1,943,957.61/2,917,237.95 = 806,720.94/x
  3. Step 3: Cross multiply
    1,943,957.61x = 2,917,237.95 × 806,720.94
  4. Step 4: Simplify right side
    1,943,957.61x = 2,353,396,941,227.67
  5. Step 5: Solve for x
    x = 2,353,396,941,227.67/1,943,957.61
  6. Step 6: Final answer
    x = 1,210,621.53

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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.