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Finding the Fourth Proportional to 978,066.20, 1,467,099.30 and 558,162.20

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Solution

The fourth proportional to 978,066.20, 1,467,099.30 and 558,162.20 is: 837,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,066.20 : 1,467,099.30 = 558,162.20 : x
  2. Step 2: Convert to fraction form
    978,066.20/1,467,099.30 = 558,162.20/x
  3. Step 3: Cross multiply
    978,066.20x = 1,467,099.30 × 558,162.20
  4. Step 4: Simplify right side
    978,066.20x = 818,879,372,906.46
  5. Step 5: Solve for x
    x = 818,879,372,906.46/978,066.20
  6. Step 6: Final answer
    x = 837,243.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.