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Finding the Fourth Proportional to 381,343.54, 526,254.17 and 211,577.26

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Solution

The fourth proportional to 381,343.54, 526,254.17 and 211,577.26 is: 291,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,343.54 : 526,254.17 = 211,577.26 : x
  2. Step 2: Convert to fraction form
    381,343.54/526,254.17 = 211,577.26/x
  3. Step 3: Cross multiply
    381,343.54x = 526,254.17 × 211,577.26
  4. Step 4: Simplify right side
    381,343.54x = 111,343,415,352.17
  5. Step 5: Solve for x
    x = 111,343,415,352.17/381,343.54
  6. Step 6: Final answer
    x = 291,976.67

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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.