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Finding the Fourth Proportional to 621,967.88, 931,979.81 and 432,797.85

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Solution

The fourth proportional to 621,967.88, 931,979.81 and 432,797.85 is: 648,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,967.88 : 931,979.81 = 432,797.85 : x
  2. Step 2: Convert to fraction form
    621,967.88/931,979.81 = 432,797.85/x
  3. Step 3: Cross multiply
    621,967.88x = 931,979.81 × 432,797.85
  4. Step 4: Simplify right side
    621,967.88x = 403,358,858,011.41
  5. Step 5: Solve for x
    x = 403,358,858,011.41/621,967.88
  6. Step 6: Final answer
    x = 648,520.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.