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Finding the Fourth Proportional to 289,441.01, 399,429.81 and 168,665.15

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Solution

The fourth proportional to 289,441.01, 399,429.81 and 168,665.15 is: 232,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,441.01 : 399,429.81 = 168,665.15 : x
  2. Step 2: Convert to fraction form
    289,441.01/399,429.81 = 168,665.15/x
  3. Step 3: Cross multiply
    289,441.01x = 399,429.81 × 168,665.15
  4. Step 4: Simplify right side
    289,441.01x = 67,369,886,820.97
  5. Step 5: Solve for x
    x = 67,369,886,820.97/289,441.01
  6. Step 6: Final answer
    x = 232,758.61

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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.