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Finding the Fourth Proportional to 383,111.70, 528,706.17 and 211,042.14

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Solution

The fourth proportional to 383,111.70, 528,706.17 and 211,042.14 is: 291,244.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,111.70 : 528,706.17 = 211,042.14 : x
  2. Step 2: Convert to fraction form
    383,111.70/528,706.17 = 211,042.14/x
  3. Step 3: Cross multiply
    383,111.70x = 528,706.17 × 211,042.14
  4. Step 4: Simplify right side
    383,111.70x = 111,579,281,548.00
  5. Step 5: Solve for x
    x = 111,579,281,548.00/383,111.70
  6. Step 6: Final answer
    x = 291,244.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.