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Finding the Fourth Proportional to 187,415.69, 281,123.28 and 61,055.72

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Solution

The fourth proportional to 187,415.69, 281,123.28 and 61,055.72 is: 91,583.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,415.69 : 281,123.28 = 61,055.72 : x
  2. Step 2: Convert to fraction form
    187,415.69/281,123.28 = 61,055.72/x
  3. Step 3: Cross multiply
    187,415.69x = 281,123.28 × 61,055.72
  4. Step 4: Simplify right side
    187,415.69x = 17,164,182,863.55
  5. Step 5: Solve for x
    x = 17,164,182,863.55/187,415.69
  6. Step 6: Final answer
    x = 91,583.49

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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.