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Finding the Fourth Proportional to 289,812.48, 399,792.96 and 193,182.72

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Solution

The fourth proportional to 289,812.48, 399,792.96 and 193,182.72 is: 266,493.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,812.48 : 399,792.96 = 193,182.72 : x
  2. Step 2: Convert to fraction form
    289,812.48/399,792.96 = 193,182.72/x
  3. Step 3: Cross multiply
    289,812.48x = 399,792.96 × 193,182.72
  4. Step 4: Simplify right side
    289,812.48x = 77,233,091,449.65
  5. Step 5: Solve for x
    x = 77,233,091,449.65/289,812.48
  6. Step 6: Final answer
    x = 266,493.33

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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.