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Finding the Fourth Proportional to 679,064.46, 937,054.10 and 392,603.00

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Solution

The fourth proportional to 679,064.46, 937,054.10 and 392,603.00 is: 541,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,064.46 : 937,054.10 = 392,603.00 : x
  2. Step 2: Convert to fraction form
    679,064.46/937,054.10 = 392,603.00/x
  3. Step 3: Cross multiply
    679,064.46x = 937,054.10 × 392,603.00
  4. Step 4: Simplify right side
    679,064.46x = 367,890,246,137.03
  5. Step 5: Solve for x
    x = 367,890,246,137.03/679,064.46
  6. Step 6: Final answer
    x = 541,760.42

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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.