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Finding the Fourth Proportional to 639,260.64, 953,651.44 and 621,884.92

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Solution

The fourth proportional to 639,260.64, 953,651.44 and 621,884.92 is: 927,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,260.64 : 953,651.44 = 621,884.92 : x
  2. Step 2: Convert to fraction form
    639,260.64/953,651.44 = 621,884.92/x
  3. Step 3: Cross multiply
    639,260.64x = 953,651.44 × 621,884.92
  4. Step 4: Simplify right side
    639,260.64x = 593,061,449,472.29
  5. Step 5: Solve for x
    x = 593,061,449,472.29/639,260.64
  6. Step 6: Final answer
    x = 927,730.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.