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Finding the Fourth Proportional to 289,626.16, 399,667.62 and 168,787.12

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Solution

The fourth proportional to 289,626.16, 399,667.62 and 168,787.12 is: 232,916.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,626.16 : 399,667.62 = 168,787.12 : x
  2. Step 2: Convert to fraction form
    289,626.16/399,667.62 = 168,787.12/x
  3. Step 3: Cross multiply
    289,626.16x = 399,667.62 × 168,787.12
  4. Step 4: Simplify right side
    289,626.16x = 67,458,746,537.05
  5. Step 5: Solve for x
    x = 67,458,746,537.05/289,626.16
  6. Step 6: Final answer
    x = 232,916.62

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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.