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Finding the Fourth Proportional to 621,333.64, 857,729.22 and 468,433.72

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Solution

The fourth proportional to 621,333.64, 857,729.22 and 468,433.72 is: 646,656.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,333.64 : 857,729.22 = 468,433.72 : x
  2. Step 2: Convert to fraction form
    621,333.64/857,729.22 = 468,433.72/x
  3. Step 3: Cross multiply
    621,333.64x = 857,729.22 × 468,433.72
  4. Step 4: Simplify right side
    621,333.64x = 401,789,289,277.30
  5. Step 5: Solve for x
    x = 401,789,289,277.30/621,333.64
  6. Step 6: Final answer
    x = 646,656.26

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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.