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Finding the Fourth Proportional to 77,898.69, 116,836.18 and 21,732.88

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Solution

The fourth proportional to 77,898.69, 116,836.18 and 21,732.88 is: 32,596.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.69 : 116,836.18 = 21,732.88 : x
  2. Step 2: Convert to fraction form
    77,898.69/116,836.18 = 21,732.88/x
  3. Step 3: Cross multiply
    77,898.69x = 116,836.18 × 21,732.88
  4. Step 4: Simplify right side
    77,898.69x = 2,539,186,679.60
  5. Step 5: Solve for x
    x = 2,539,186,679.60/77,898.69
  6. Step 6: Final answer
    x = 32,596.01

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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.