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Finding the Fourth Proportional to 283,647.54, 391,431.66 and 156,323.22

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Solution

The fourth proportional to 283,647.54, 391,431.66 and 156,323.22 is: 215,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,647.54 : 391,431.66 = 156,323.22 : x
  2. Step 2: Convert to fraction form
    283,647.54/391,431.66 = 156,323.22/x
  3. Step 3: Cross multiply
    283,647.54x = 391,431.66 × 156,323.22
  4. Step 4: Simplify right side
    283,647.54x = 61,189,857,501.15
  5. Step 5: Solve for x
    x = 61,189,857,501.15/283,647.54
  6. Step 6: Final answer
    x = 215,724.97

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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.