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Finding the Fourth Proportional to 71,376.65, 98,455.22 and 45,916.21

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Solution

The fourth proportional to 71,376.65, 98,455.22 and 45,916.21 is: 63,335.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,376.65 : 98,455.22 = 45,916.21 : x
  2. Step 2: Convert to fraction form
    71,376.65/98,455.22 = 45,916.21/x
  3. Step 3: Cross multiply
    71,376.65x = 98,455.22 × 45,916.21
  4. Step 4: Simplify right side
    71,376.65x = 4,520,690,557.12
  5. Step 5: Solve for x
    x = 4,520,690,557.12/71,376.65
  6. Step 6: Final answer
    x = 63,335.71

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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.