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Finding the Fourth Proportional to 621,674.40, 932,972.40 and 455,786.40

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Solution

The fourth proportional to 621,674.40, 932,972.40 and 455,786.40 is: 684,017.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,674.40 : 932,972.40 = 455,786.40 : x
  2. Step 2: Convert to fraction form
    621,674.40/932,972.40 = 455,786.40/x
  3. Step 3: Cross multiply
    621,674.40x = 932,972.40 × 455,786.40
  4. Step 4: Simplify right side
    621,674.40x = 425,236,131,495.36
  5. Step 5: Solve for x
    x = 425,236,131,495.36/621,674.40
  6. Step 6: Final answer
    x = 684,017.44

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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.