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Finding the Fourth Proportional to 190,447.99, 285,425.93 and 90,638.77

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Solution

The fourth proportional to 190,447.99, 285,425.93 and 90,638.77 is: 135,841.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,447.99 : 285,425.93 = 90,638.77 : x
  2. Step 2: Convert to fraction form
    190,447.99/285,425.93 = 90,638.77/x
  3. Step 3: Cross multiply
    190,447.99x = 285,425.93 × 90,638.77
  4. Step 4: Simplify right side
    190,447.99x = 25,870,655,221.31
  5. Step 5: Solve for x
    x = 25,870,655,221.31/190,447.99
  6. Step 6: Final answer
    x = 135,841.05

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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.