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Finding the Fourth Proportional to 190,892.45, 286,220.95 and 64,520.78

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Solution

The fourth proportional to 190,892.45, 286,220.95 and 64,520.78 is: 96,741.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,892.45 : 286,220.95 = 64,520.78 : x
  2. Step 2: Convert to fraction form
    190,892.45/286,220.95 = 64,520.78/x
  3. Step 3: Cross multiply
    190,892.45x = 286,220.95 × 64,520.78
  4. Step 4: Simplify right side
    190,892.45x = 18,467,197,353.93
  5. Step 5: Solve for x
    x = 18,467,197,353.93/190,892.45
  6. Step 6: Final answer
    x = 96,741.37

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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.