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Finding the Fourth Proportional to 661,691.11, 992,002.31 and 256,674.21

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Solution

The fourth proportional to 661,691.11, 992,002.31 and 256,674.21 is: 384,804.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,691.11 : 992,002.31 = 256,674.21 : x
  2. Step 2: Convert to fraction form
    661,691.11/992,002.31 = 256,674.21/x
  3. Step 3: Cross multiply
    661,691.11x = 992,002.31 × 256,674.21
  4. Step 4: Simplify right side
    661,691.11x = 254,621,409,237.43
  5. Step 5: Solve for x
    x = 254,621,409,237.43/661,691.11
  6. Step 6: Final answer
    x = 384,804.04

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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.