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Finding the Fourth Proportional to 99,239.88, 136,950.28 and 53,918.23

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Solution

The fourth proportional to 99,239.88, 136,950.28 and 53,918.23 is: 74,406.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,239.88 : 136,950.28 = 53,918.23 : x
  2. Step 2: Convert to fraction form
    99,239.88/136,950.28 = 53,918.23/x
  3. Step 3: Cross multiply
    99,239.88x = 136,950.28 × 53,918.23
  4. Step 4: Simplify right side
    99,239.88x = 7,384,116,695.60
  5. Step 5: Solve for x
    x = 7,384,116,695.60/99,239.88
  6. Step 6: Final answer
    x = 74,406.75

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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.