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Finding the Fourth Proportional to 370,586.48, 556,623.64 and 221,118.48

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Solution

The fourth proportional to 370,586.48, 556,623.64 and 221,118.48 is: 332,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,586.48 : 556,623.64 = 221,118.48 : x
  2. Step 2: Convert to fraction form
    370,586.48/556,623.64 = 221,118.48/x
  3. Step 3: Cross multiply
    370,586.48x = 556,623.64 × 221,118.48
  4. Step 4: Simplify right side
    370,586.48x = 123,079,773,208.87
  5. Step 5: Solve for x
    x = 123,079,773,208.87/370,586.48
  6. Step 6: Final answer
    x = 332,121.60

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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.