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Finding the Fourth Proportional to 447,798.92, 616,911.40 and 311,598.64

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Solution

The fourth proportional to 447,798.92, 616,911.40 and 311,598.64 is: 429,274.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,798.92 : 616,911.40 = 311,598.64 : x
  2. Step 2: Convert to fraction form
    447,798.92/616,911.40 = 311,598.64/x
  3. Step 3: Cross multiply
    447,798.92x = 616,911.40 × 311,598.64
  4. Step 4: Simplify right side
    447,798.92x = 192,228,753,240.50
  5. Step 5: Solve for x
    x = 192,228,753,240.50/447,798.92
  6. Step 6: Final answer
    x = 429,274.71

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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.