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Finding the Fourth Proportional to 96,644.80, 144,967.20 and 61,215.40

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Solution

The fourth proportional to 96,644.80, 144,967.20 and 61,215.40 is: 91,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,644.80 : 144,967.20 = 61,215.40 : x
  2. Step 2: Convert to fraction form
    96,644.80/144,967.20 = 61,215.40/x
  3. Step 3: Cross multiply
    96,644.80x = 144,967.20 × 61,215.40
  4. Step 4: Simplify right side
    96,644.80x = 8,874,225,134.88
  5. Step 5: Solve for x
    x = 8,874,225,134.88/96,644.80
  6. Step 6: Final answer
    x = 91,823.10

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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.