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Finding the Fourth Proportional to 289,160.64, 399,041.64 and 161,836.23

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Solution

The fourth proportional to 289,160.64, 399,041.64 and 161,836.23 is: 223,333.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,160.64 : 399,041.64 = 161,836.23 : x
  2. Step 2: Convert to fraction form
    289,160.64/399,041.64 = 161,836.23/x
  3. Step 3: Cross multiply
    289,160.64x = 399,041.64 × 161,836.23
  4. Step 4: Simplify right side
    289,160.64x = 64,579,394,630.62
  5. Step 5: Solve for x
    x = 64,579,394,630.62/289,160.64
  6. Step 6: Final answer
    x = 223,333.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.