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Finding the Fourth Proportional to 666,388.48, 999,582.72 and 193,074.16

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Solution

The fourth proportional to 666,388.48, 999,582.72 and 193,074.16 is: 289,611.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,388.48 : 999,582.72 = 193,074.16 : x
  2. Step 2: Convert to fraction form
    666,388.48/999,582.72 = 193,074.16/x
  3. Step 3: Cross multiply
    666,388.48x = 999,582.72 × 193,074.16
  4. Step 4: Simplify right side
    666,388.48x = 192,993,594,014.52
  5. Step 5: Solve for x
    x = 192,993,594,014.52/666,388.48
  6. Step 6: Final answer
    x = 289,611.24

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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.