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Finding the Fourth Proportional to 908,595.80, 1,362,893.70 and 310,232.60

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Solution

The fourth proportional to 908,595.80, 1,362,893.70 and 310,232.60 is: 465,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,595.80 : 1,362,893.70 = 310,232.60 : x
  2. Step 2: Convert to fraction form
    908,595.80/1,362,893.70 = 310,232.60/x
  3. Step 3: Cross multiply
    908,595.80x = 1,362,893.70 × 310,232.60
  4. Step 4: Simplify right side
    908,595.80x = 422,814,056,074.62
  5. Step 5: Solve for x
    x = 422,814,056,074.62/908,595.80
  6. Step 6: Final answer
    x = 465,348.90

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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.