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Finding the Fourth Proportional to 624,219.20, 936,328.80 and 617,998.40

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Solution

The fourth proportional to 624,219.20, 936,328.80 and 617,998.40 is: 926,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,219.20 : 936,328.80 = 617,998.40 : x
  2. Step 2: Convert to fraction form
    624,219.20/936,328.80 = 617,998.40/x
  3. Step 3: Cross multiply
    624,219.20x = 936,328.80 × 617,998.40
  4. Step 4: Simplify right side
    624,219.20x = 578,649,700,273.92
  5. Step 5: Solve for x
    x = 578,649,700,273.92/624,219.20
  6. Step 6: Final answer
    x = 926,997.60

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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.