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Finding the Fourth Proportional to 624,140.70, 936,211.05 and 617,919.90

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Solution

The fourth proportional to 624,140.70, 936,211.05 and 617,919.90 is: 926,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,140.70 : 936,211.05 = 617,919.90 : x
  2. Step 2: Convert to fraction form
    624,140.70/936,211.05 = 617,919.90/x
  3. Step 3: Cross multiply
    624,140.70x = 936,211.05 × 617,919.90
  4. Step 4: Simplify right side
    624,140.70x = 578,503,438,394.90
  5. Step 5: Solve for x
    x = 578,503,438,394.90/624,140.70
  6. Step 6: Final answer
    x = 926,879.85

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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.