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Finding the Fourth Proportional to 413,520.94, 620,367.47 and 129,200.01

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Solution

The fourth proportional to 413,520.94, 620,367.47 and 129,200.01 is: 193,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,520.94 : 620,367.47 = 129,200.01 : x
  2. Step 2: Convert to fraction form
    413,520.94/620,367.47 = 129,200.01/x
  3. Step 3: Cross multiply
    413,520.94x = 620,367.47 × 129,200.01
  4. Step 4: Simplify right side
    413,520.94x = 80,151,483,327.67
  5. Step 5: Solve for x
    x = 80,151,483,327.67/413,520.94
  6. Step 6: Final answer
    x = 193,826.90

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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.