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Finding the Fourth Proportional to 672,847.34, 928,296.45 and 431,263.13

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Solution

The fourth proportional to 672,847.34, 928,296.45 and 431,263.13 is: 594,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,847.34 : 928,296.45 = 431,263.13 : x
  2. Step 2: Convert to fraction form
    672,847.34/928,296.45 = 431,263.13/x
  3. Step 3: Cross multiply
    672,847.34x = 928,296.45 × 431,263.13
  4. Step 4: Simplify right side
    672,847.34x = 400,340,027,953.41
  5. Step 5: Solve for x
    x = 400,340,027,953.41/672,847.34
  6. Step 6: Final answer
    x = 594,993.85

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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.