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Finding the Fourth Proportional to 190,807.88, 263,301.68 and 105,918.24

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Solution

The fourth proportional to 190,807.88, 263,301.68 and 105,918.24 is: 146,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,807.88 : 263,301.68 = 105,918.24 : x
  2. Step 2: Convert to fraction form
    190,807.88/263,301.68 = 105,918.24/x
  3. Step 3: Cross multiply
    190,807.88x = 263,301.68 × 105,918.24
  4. Step 4: Simplify right side
    190,807.88x = 27,888,450,534.64
  5. Step 5: Solve for x
    x = 27,888,450,534.64/190,807.88
  6. Step 6: Final answer
    x = 146,159.85

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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.