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Finding the Fourth Proportional to 413,976.60, 620,964.90 and 354,927.60

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Solution

The fourth proportional to 413,976.60, 620,964.90 and 354,927.60 is: 532,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,976.60 : 620,964.90 = 354,927.60 : x
  2. Step 2: Convert to fraction form
    413,976.60/620,964.90 = 354,927.60/x
  3. Step 3: Cross multiply
    413,976.60x = 620,964.90 × 354,927.60
  4. Step 4: Simplify right side
    413,976.60x = 220,397,581,641.24
  5. Step 5: Solve for x
    x = 220,397,581,641.24/413,976.60
  6. Step 6: Final answer
    x = 532,391.40

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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.