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Finding the Fourth Proportional to 672,958.19, 928,783.05 and 431,513.39

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Solution

The fourth proportional to 672,958.19, 928,783.05 and 431,513.39 is: 595,553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,958.19 : 928,783.05 = 431,513.39 : x
  2. Step 2: Convert to fraction form
    672,958.19/928,783.05 = 431,513.39/x
  3. Step 3: Cross multiply
    672,958.19x = 928,783.05 × 431,513.39
  4. Step 4: Simplify right side
    672,958.19x = 400,782,322,480.04
  5. Step 5: Solve for x
    x = 400,782,322,480.04/672,958.19
  6. Step 6: Final answer
    x = 595,553.08

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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.