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Finding the Fourth Proportional to 139,695.84, 192,780.27 and 76,034.10

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Solution

The fourth proportional to 139,695.84, 192,780.27 and 76,034.10 is: 104,927.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,695.84 : 192,780.27 = 76,034.10 : x
  2. Step 2: Convert to fraction form
    139,695.84/192,780.27 = 76,034.10/x
  3. Step 3: Cross multiply
    139,695.84x = 192,780.27 × 76,034.10
  4. Step 4: Simplify right side
    139,695.84x = 14,657,874,327.21
  5. Step 5: Solve for x
    x = 14,657,874,327.21/139,695.84
  6. Step 6: Final answer
    x = 104,927.06

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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.