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Finding the Fourth Proportional to 153,266.65, 211,605.15 and 104,949.43

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Solution

The fourth proportional to 153,266.65, 211,605.15 and 104,949.43 is: 144,896.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,266.65 : 211,605.15 = 104,949.43 : x
  2. Step 2: Convert to fraction form
    153,266.65/211,605.15 = 104,949.43/x
  3. Step 3: Cross multiply
    153,266.65x = 211,605.15 × 104,949.43
  4. Step 4: Simplify right side
    153,266.65x = 22,207,839,877.56
  5. Step 5: Solve for x
    x = 22,207,839,877.56/153,266.65
  6. Step 6: Final answer
    x = 144,896.75

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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.