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Finding the Fourth Proportional to 472,672.20, 709,526.70 and 262,201.80

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Solution

The fourth proportional to 472,672.20, 709,526.70 and 262,201.80 is: 393,590.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,672.20 : 709,526.70 = 262,201.80 : x
  2. Step 2: Convert to fraction form
    472,672.20/709,526.70 = 262,201.80/x
  3. Step 3: Cross multiply
    472,672.20x = 709,526.70 × 262,201.80
  4. Step 4: Simplify right side
    472,672.20x = 186,039,177,888.06
  5. Step 5: Solve for x
    x = 186,039,177,888.06/472,672.20
  6. Step 6: Final answer
    x = 393,590.27

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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.