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Finding the Fourth Proportional to 443,998.57, 612,705.58 and 242,790.25

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Solution

The fourth proportional to 443,998.57, 612,705.58 and 242,790.25 is: 335,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,998.57 : 612,705.58 = 242,790.25 : x
  2. Step 2: Convert to fraction form
    443,998.57/612,705.58 = 242,790.25/x
  3. Step 3: Cross multiply
    443,998.57x = 612,705.58 × 242,790.25
  4. Step 4: Simplify right side
    443,998.57x = 148,758,940,944.60
  5. Step 5: Solve for x
    x = 148,758,940,944.60/443,998.57
  6. Step 6: Final answer
    x = 335,043.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.