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Finding the Fourth Proportional to 19,490.79, 29,236.13 and 7,010.79

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Solution

The fourth proportional to 19,490.79, 29,236.13 and 7,010.79 is: 10,516.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,490.79 : 29,236.13 = 7,010.79 : x
  2. Step 2: Convert to fraction form
    19,490.79/29,236.13 = 7,010.79/x
  3. Step 3: Cross multiply
    19,490.79x = 29,236.13 × 7,010.79
  4. Step 4: Simplify right side
    19,490.79x = 204,968,332.79
  5. Step 5: Solve for x
    x = 204,968,332.79/19,490.79
  6. Step 6: Final answer
    x = 10,516.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.