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Finding the Fourth Proportional to 386,353.96, 533,476.74 and 259,138.60

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Solution

The fourth proportional to 386,353.96, 533,476.74 and 259,138.60 is: 357,818.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,353.96 : 533,476.74 = 259,138.60 : x
  2. Step 2: Convert to fraction form
    386,353.96/533,476.74 = 259,138.60/x
  3. Step 3: Cross multiply
    386,353.96x = 533,476.74 × 259,138.60
  4. Step 4: Simplify right side
    386,353.96x = 138,244,415,536.16
  5. Step 5: Solve for x
    x = 138,244,415,536.16/386,353.96
  6. Step 6: Final answer
    x = 357,818.04

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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.