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Finding the Fourth Proportional to 383,124.55, 528,705.39 and 211,058.59

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Solution

The fourth proportional to 383,124.55, 528,705.39 and 211,058.59 is: 291,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,124.55 : 528,705.39 = 211,058.59 : x
  2. Step 2: Convert to fraction form
    383,124.55/528,705.39 = 211,058.59/x
  3. Step 3: Cross multiply
    383,124.55x = 528,705.39 × 211,058.59
  4. Step 4: Simplify right side
    383,124.55x = 111,587,814,138.80
  5. Step 5: Solve for x
    x = 111,587,814,138.80/383,124.55
  6. Step 6: Final answer
    x = 291,257.28

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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.