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Finding the Fourth Proportional to 1,407,728.76, 1,943,419.44 and 1,101,153.78

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Solution

The fourth proportional to 1,407,728.76, 1,943,419.44 and 1,101,153.78 is: 1,520,181.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,728.76 : 1,943,419.44 = 1,101,153.78 : x
  2. Step 2: Convert to fraction form
    1,407,728.76/1,943,419.44 = 1,101,153.78/x
  3. Step 3: Cross multiply
    1,407,728.76x = 1,943,419.44 × 1,101,153.78
  4. Step 4: Simplify right side
    1,407,728.76x = 2,140,003,662,481.48
  5. Step 5: Solve for x
    x = 2,140,003,662,481.48/1,407,728.76
  6. Step 6: Final answer
    x = 1,520,181.82

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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.