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Finding the Fourth Proportional to 192,798.51, 289,142.24 and 66,433.65

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Solution

The fourth proportional to 192,798.51, 289,142.24 and 66,433.65 is: 99,631.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,798.51 : 289,142.24 = 66,433.65 : x
  2. Step 2: Convert to fraction form
    192,798.51/289,142.24 = 66,433.65/x
  3. Step 3: Cross multiply
    192,798.51x = 289,142.24 × 66,433.65
  4. Step 4: Simplify right side
    192,798.51x = 19,208,774,040.21
  5. Step 5: Solve for x
    x = 19,208,774,040.21/192,798.51
  6. Step 6: Final answer
    x = 99,631.34

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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.