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Finding the Fourth Proportional to 661,693.11, 992,005.31 and 256,676.21

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Solution

The fourth proportional to 661,693.11, 992,005.31 and 256,676.21 is: 384,807.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,693.11 : 992,005.31 = 256,676.21 : x
  2. Step 2: Convert to fraction form
    661,693.11/992,005.31 = 256,676.21/x
  3. Step 3: Cross multiply
    661,693.11x = 992,005.31 × 256,676.21
  4. Step 4: Simplify right side
    661,693.11x = 254,624,163,270.68
  5. Step 5: Solve for x
    x = 254,624,163,270.68/661,693.11
  6. Step 6: Final answer
    x = 384,807.03

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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.