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Finding the Fourth Proportional to 313,872.20, 470,808.30 and 114,417.80

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Solution

The fourth proportional to 313,872.20, 470,808.30 and 114,417.80 is: 171,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,872.20 : 470,808.30 = 114,417.80 : x
  2. Step 2: Convert to fraction form
    313,872.20/470,808.30 = 114,417.80/x
  3. Step 3: Cross multiply
    313,872.20x = 470,808.30 × 114,417.80
  4. Step 4: Simplify right side
    313,872.20x = 53,868,849,907.74
  5. Step 5: Solve for x
    x = 53,868,849,907.74/313,872.20
  6. Step 6: Final answer
    x = 171,626.70

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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.