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Finding the Fourth Proportional to 100,952.19, 151,260.89 and 61,389.63

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Solution

The fourth proportional to 100,952.19, 151,260.89 and 61,389.63 is: 91,982.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,952.19 : 151,260.89 = 61,389.63 : x
  2. Step 2: Convert to fraction form
    100,952.19/151,260.89 = 61,389.63/x
  3. Step 3: Cross multiply
    100,952.19x = 151,260.89 × 61,389.63
  4. Step 4: Simplify right side
    100,952.19x = 9,285,849,763.62
  5. Step 5: Solve for x
    x = 9,285,849,763.62/100,952.19
  6. Step 6: Final answer
    x = 91,982.65

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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.