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Finding the Fourth Proportional to 530,879.60, 796,319.40 and 198,412.40

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Solution

The fourth proportional to 530,879.60, 796,319.40 and 198,412.40 is: 297,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,879.60 : 796,319.40 = 198,412.40 : x
  2. Step 2: Convert to fraction form
    530,879.60/796,319.40 = 198,412.40/x
  3. Step 3: Cross multiply
    530,879.60x = 796,319.40 × 198,412.40
  4. Step 4: Simplify right side
    530,879.60x = 157,999,643,320.56
  5. Step 5: Solve for x
    x = 157,999,643,320.56/530,879.60
  6. Step 6: Final answer
    x = 297,618.60

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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.