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Finding the Fourth Proportional to 637,910.40, 956,865.60 and 258,830.40

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Solution

The fourth proportional to 637,910.40, 956,865.60 and 258,830.40 is: 388,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,910.40 : 956,865.60 = 258,830.40 : x
  2. Step 2: Convert to fraction form
    637,910.40/956,865.60 = 258,830.40/x
  3. Step 3: Cross multiply
    637,910.40x = 956,865.60 × 258,830.40
  4. Step 4: Simplify right side
    637,910.40x = 247,665,905,994.24
  5. Step 5: Solve for x
    x = 247,665,905,994.24/637,910.40
  6. Step 6: Final answer
    x = 388,245.60

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Double scale
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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.