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Finding the Fourth Proportional to 978,225.90, 1,467,338.85 and 978,225.90

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Solution

The fourth proportional to 978,225.90, 1,467,338.85 and 978,225.90 is: 1,467,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,225.90 : 1,467,338.85 = 978,225.90 : x
  2. Step 2: Convert to fraction form
    978,225.90/1,467,338.85 = 978,225.90/x
  3. Step 3: Cross multiply
    978,225.90x = 1,467,338.85 × 978,225.90
  4. Step 4: Simplify right side
    978,225.90x = 1,435,388,867,146.22
  5. Step 5: Solve for x
    x = 1,435,388,867,146.22/978,225.90
  6. Step 6: Final answer
    x = 1,467,338.85

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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.