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Finding the Fourth Proportional to 638,803.83, 958,172.94 and 189,528.42

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Solution

The fourth proportional to 638,803.83, 958,172.94 and 189,528.42 is: 284,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,803.83 : 958,172.94 = 189,528.42 : x
  2. Step 2: Convert to fraction form
    638,803.83/958,172.94 = 189,528.42/x
  3. Step 3: Cross multiply
    638,803.83x = 958,172.94 × 189,528.42
  4. Step 4: Simplify right side
    638,803.83x = 181,601,003,404.96
  5. Step 5: Solve for x
    x = 181,601,003,404.96/638,803.83
  6. Step 6: Final answer
    x = 284,282.90

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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.