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Finding the Fourth Proportional to 187,721.94, 281,606.40 and 61,374.90

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Solution

The fourth proportional to 187,721.94, 281,606.40 and 61,374.90 is: 92,070.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,721.94 : 281,606.40 = 61,374.90 : x
  2. Step 2: Convert to fraction form
    187,721.94/281,606.40 = 61,374.90/x
  3. Step 3: Cross multiply
    187,721.94x = 281,606.40 × 61,374.90
  4. Step 4: Simplify right side
    187,721.94x = 17,283,564,639.36
  5. Step 5: Solve for x
    x = 17,283,564,639.36/187,721.94
  6. Step 6: Final answer
    x = 92,070.03

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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.