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Finding the Fourth Proportional to 978,235.15, 1,467,352.73 and 978,235.15

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Solution

The fourth proportional to 978,235.15, 1,467,352.73 and 978,235.15 is: 1,467,352.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,235.15 : 1,467,352.73 = 978,235.15 : x
  2. Step 2: Convert to fraction form
    978,235.15/1,467,352.73 = 978,235.15/x
  3. Step 3: Cross multiply
    978,235.15x = 1,467,352.73 × 978,235.15
  4. Step 4: Simplify right side
    978,235.15x = 1,435,416,017,934.46
  5. Step 5: Solve for x
    x = 1,435,416,017,934.46/978,235.15
  6. Step 6: Final answer
    x = 1,467,352.73

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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.