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Finding the Fourth Proportional to 673,086.26, 928,959.57 and 431,641.46

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Solution

The fourth proportional to 673,086.26, 928,959.57 and 431,641.46 is: 595,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,086.26 : 928,959.57 = 431,641.46 : x
  2. Step 2: Convert to fraction form
    673,086.26/928,959.57 = 431,641.46/x
  3. Step 3: Cross multiply
    673,086.26x = 928,959.57 × 431,641.46
  4. Step 4: Simplify right side
    673,086.26x = 400,977,465,075.77
  5. Step 5: Solve for x
    x = 400,977,465,075.77/673,086.26
  6. Step 6: Final answer
    x = 595,729.68

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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.