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Finding the Fourth Proportional to 119,889.52, 165,437.06 and 76,792.98

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Solution

The fourth proportional to 119,889.52, 165,437.06 and 76,792.98 is: 105,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,889.52 : 165,437.06 = 76,792.98 : x
  2. Step 2: Convert to fraction form
    119,889.52/165,437.06 = 76,792.98/x
  3. Step 3: Cross multiply
    119,889.52x = 165,437.06 × 76,792.98
  4. Step 4: Simplify right side
    119,889.52x = 12,704,404,839.84
  5. Step 5: Solve for x
    x = 12,704,404,839.84/119,889.52
  6. Step 6: Final answer
    x = 105,967.60

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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.