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Finding the Fourth Proportional to 621,782.79, 931,784.27 and 266,701.83

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Solution

The fourth proportional to 621,782.79, 931,784.27 and 266,701.83 is: 399,671.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,782.79 : 931,784.27 = 266,701.83 : x
  2. Step 2: Convert to fraction form
    621,782.79/931,784.27 = 266,701.83/x
  3. Step 3: Cross multiply
    621,782.79x = 931,784.27 × 266,701.83
  4. Step 4: Simplify right side
    621,782.79x = 248,508,568,640.71
  5. Step 5: Solve for x
    x = 248,508,568,640.71/621,782.79
  6. Step 6: Final answer
    x = 399,671.03

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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.