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Finding the Fourth Proportional to 1,914,849.78, 2,872,347.57 and 716,645.94

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Solution

The fourth proportional to 1,914,849.78, 2,872,347.57 and 716,645.94 is: 1,074,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914,849.78 : 2,872,347.57 = 716,645.94 : x
  2. Step 2: Convert to fraction form
    1,914,849.78/2,872,347.57 = 716,645.94/x
  3. Step 3: Cross multiply
    1,914,849.78x = 2,872,347.57 × 716,645.94
  4. Step 4: Simplify right side
    1,914,849.78x = 2,058,456,224,309.37
  5. Step 5: Solve for x
    x = 2,058,456,224,309.37/1,914,849.78
  6. Step 6: Final answer
    x = 1,074,996.19

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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.