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Finding the Fourth Proportional to 356,485.10, 534,468.45 and 146,014.70

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Solution

The fourth proportional to 356,485.10, 534,468.45 and 146,014.70 is: 218,915.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,485.10 : 534,468.45 = 146,014.70 : x
  2. Step 2: Convert to fraction form
    356,485.10/534,468.45 = 146,014.70/x
  3. Step 3: Cross multiply
    356,485.10x = 534,468.45 × 146,014.70
  4. Step 4: Simplify right side
    356,485.10x = 78,040,250,386.22
  5. Step 5: Solve for x
    x = 78,040,250,386.22/356,485.10
  6. Step 6: Final answer
    x = 218,915.88

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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.