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Finding the Fourth Proportional to 458,147.64, 686,520.05 and 191,763.12

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Solution

The fourth proportional to 458,147.64, 686,520.05 and 191,763.12 is: 287,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,147.64 : 686,520.05 = 191,763.12 : x
  2. Step 2: Convert to fraction form
    458,147.64/686,520.05 = 191,763.12/x
  3. Step 3: Cross multiply
    458,147.64x = 686,520.05 × 191,763.12
  4. Step 4: Simplify right side
    458,147.64x = 131,649,225,771.74
  5. Step 5: Solve for x
    x = 131,649,225,771.74/458,147.64
  6. Step 6: Final answer
    x = 287,351.09

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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.