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Finding the Fourth Proportional to 578,091.60, 867,137.40 and 245,624.40

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Solution

The fourth proportional to 578,091.60, 867,137.40 and 245,624.40 is: 368,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,091.60 : 867,137.40 = 245,624.40 : x
  2. Step 2: Convert to fraction form
    578,091.60/867,137.40 = 245,624.40/x
  3. Step 3: Cross multiply
    578,091.60x = 867,137.40 × 245,624.40
  4. Step 4: Simplify right side
    578,091.60x = 212,990,103,592.56
  5. Step 5: Solve for x
    x = 212,990,103,592.56/578,091.60
  6. Step 6: Final answer
    x = 368,436.60

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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.