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Finding the Fourth Proportional to 590,856.12, 815,378.22 and 322,582.20

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Solution

The fourth proportional to 590,856.12, 815,378.22 and 322,582.20 is: 445,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,856.12 : 815,378.22 = 322,582.20 : x
  2. Step 2: Convert to fraction form
    590,856.12/815,378.22 = 322,582.20/x
  3. Step 3: Cross multiply
    590,856.12x = 815,378.22 × 322,582.20
  4. Step 4: Simplify right side
    590,856.12x = 263,026,500,039.68
  5. Step 5: Solve for x
    x = 263,026,500,039.68/590,856.12
  6. Step 6: Final answer
    x = 445,161.67

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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.