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Finding the Fourth Proportional to 606,785.16, 836,889.84 and 389,014.20

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Solution

The fourth proportional to 606,785.16, 836,889.84 and 389,014.20 is: 536,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,785.16 : 836,889.84 = 389,014.20 : x
  2. Step 2: Convert to fraction form
    606,785.16/836,889.84 = 389,014.20/x
  3. Step 3: Cross multiply
    606,785.16x = 836,889.84 × 389,014.20
  4. Step 4: Simplify right side
    606,785.16x = 325,562,031,595.73
  5. Step 5: Solve for x
    x = 325,562,031,595.73/606,785.16
  6. Step 6: Final answer
    x = 536,535.92

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Double scale
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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.