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Finding the Fourth Proportional to 1,405,998, 1,940,274.36 and 761,418

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Solution

The fourth proportional to 1,405,998, 1,940,274.36 and 761,418 is: 1,050,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,998 : 1,940,274.36 = 761,418 : x
  2. Step 2: Convert to fraction form
    1,405,998/1,940,274.36 = 761,418/x
  3. Step 3: Cross multiply
    1,405,998x = 1,940,274.36 × 761,418
  4. Step 4: Simplify right side
    1,405,998x = 1,477,359,822,642.48
  5. Step 5: Solve for x
    x = 1,477,359,822,642.48/1,405,998
  6. Step 6: Final answer
    x = 1,050,755.28

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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.