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Finding the Fourth Proportional to 383,360.01, 529,040.40 and 211,284.28

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Solution

The fourth proportional to 383,360.01, 529,040.40 and 211,284.28 is: 291,574.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,360.01 : 529,040.40 = 211,284.28 : x
  2. Step 2: Convert to fraction form
    383,360.01/529,040.40 = 211,284.28/x
  3. Step 3: Cross multiply
    383,360.01x = 529,040.40 × 211,284.28
  4. Step 4: Simplify right side
    383,360.01x = 111,777,920,004.91
  5. Step 5: Solve for x
    x = 111,777,920,004.91/383,360.01
  6. Step 6: Final answer
    x = 291,574.28

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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.