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Finding the Fourth Proportional to 978,342.55, 1,467,513.83 and 978,342.55

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Solution

The fourth proportional to 978,342.55, 1,467,513.83 and 978,342.55 is: 1,467,513.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,342.55 : 1,467,513.83 = 978,342.55 : x
  2. Step 2: Convert to fraction form
    978,342.55/1,467,513.83 = 978,342.55/x
  3. Step 3: Cross multiply
    978,342.55x = 1,467,513.83 × 978,342.55
  4. Step 4: Simplify right side
    978,342.55x = 1,435,731,222,602.47
  5. Step 5: Solve for x
    x = 1,435,731,222,602.47/978,342.55
  6. Step 6: Final answer
    x = 1,467,513.83

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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.