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Finding the Fourth Proportional to 686,785.37, 948,208.48 and 441,879.64

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Solution

The fourth proportional to 686,785.37, 948,208.48 and 441,879.64 is: 610,080.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,785.37 : 948,208.48 = 441,879.64 : x
  2. Step 2: Convert to fraction form
    686,785.37/948,208.48 = 441,879.64/x
  3. Step 3: Cross multiply
    686,785.37x = 948,208.48 × 441,879.64
  4. Step 4: Simplify right side
    686,785.37x = 418,994,018,312.13
  5. Step 5: Solve for x
    x = 418,994,018,312.13/686,785.37
  6. Step 6: Final answer
    x = 610,080.00

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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.