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Finding the Fourth Proportional to 289,433.81, 399,468.09 and 168,646.68

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Solution

The fourth proportional to 289,433.81, 399,468.09 and 168,646.68 is: 232,761.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,433.81 : 399,468.09 = 168,646.68 : x
  2. Step 2: Convert to fraction form
    289,433.81/399,468.09 = 168,646.68/x
  3. Step 3: Cross multiply
    289,433.81x = 399,468.09 × 168,646.68
  4. Step 4: Simplify right side
    289,433.81x = 67,368,967,144.44
  5. Step 5: Solve for x
    x = 67,368,967,144.44/289,433.81
  6. Step 6: Final answer
    x = 232,761.23

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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.