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Finding the Fourth Proportional to 127,736.84, 176,276.89 and 74,052.98

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Solution

The fourth proportional to 127,736.84, 176,276.89 and 74,052.98 is: 102,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,736.84 : 176,276.89 = 74,052.98 : x
  2. Step 2: Convert to fraction form
    127,736.84/176,276.89 = 74,052.98/x
  3. Step 3: Cross multiply
    127,736.84x = 176,276.89 × 74,052.98
  4. Step 4: Simplify right side
    127,736.84x = 13,053,828,881.85
  5. Step 5: Solve for x
    x = 13,053,828,881.85/127,736.84
  6. Step 6: Final answer
    x = 102,193.14

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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.