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Finding the Fourth Proportional to 493,391.40, 740,087.10 and 488,725.80

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Solution

The fourth proportional to 493,391.40, 740,087.10 and 488,725.80 is: 733,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,391.40 : 740,087.10 = 488,725.80 : x
  2. Step 2: Convert to fraction form
    493,391.40/740,087.10 = 488,725.80/x
  3. Step 3: Cross multiply
    493,391.40x = 740,087.10 × 488,725.80
  4. Step 4: Simplify right side
    493,391.40x = 361,699,660,017.18
  5. Step 5: Solve for x
    x = 361,699,660,017.18/493,391.40
  6. Step 6: Final answer
    x = 733,088.70

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Similar ratio
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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.