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Finding the Fourth Proportional to 1,276,579.02, 1,914,917.13 and 477,776.46

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Solution

The fourth proportional to 1,276,579.02, 1,914,917.13 and 477,776.46 is: 716,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,579.02 : 1,914,917.13 = 477,776.46 : x
  2. Step 2: Convert to fraction form
    1,276,579.02/1,914,917.13 = 477,776.46/x
  3. Step 3: Cross multiply
    1,276,579.02x = 1,914,917.13 × 477,776.46
  4. Step 4: Simplify right side
    1,276,579.02x = 914,902,327,564.76
  5. Step 5: Solve for x
    x = 914,902,327,564.76/1,276,579.02
  6. Step 6: Final answer
    x = 716,682.88

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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.