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Finding the Fourth Proportional to 336,709.80, 505,064.70 and 262,060.20

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Solution

The fourth proportional to 336,709.80, 505,064.70 and 262,060.20 is: 393,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,709.80 : 505,064.70 = 262,060.20 : x
  2. Step 2: Convert to fraction form
    336,709.80/505,064.70 = 262,060.20/x
  3. Step 3: Cross multiply
    336,709.80x = 505,064.70 × 262,060.20
  4. Step 4: Simplify right side
    336,709.80x = 132,357,356,294.94
  5. Step 5: Solve for x
    x = 132,357,356,294.94/336,709.80
  6. Step 6: Final answer
    x = 393,090.30

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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.