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Finding the Fourth Proportional to 289,273.28, 399,149.64 and 181,767.20

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Solution

The fourth proportional to 289,273.28, 399,149.64 and 181,767.20 is: 250,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,273.28 : 399,149.64 = 181,767.20 : x
  2. Step 2: Convert to fraction form
    289,273.28/399,149.64 = 181,767.20/x
  3. Step 3: Cross multiply
    289,273.28x = 399,149.64 × 181,767.20
  4. Step 4: Simplify right side
    289,273.28x = 72,552,312,443.81
  5. Step 5: Solve for x
    x = 72,552,312,443.81/289,273.28
  6. Step 6: Final answer
    x = 250,808.90

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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.