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Finding the Fourth Proportional to 187,886.88, 281,653.92 and 63,140.64

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Solution

The fourth proportional to 187,886.88, 281,653.92 and 63,140.64 is: 94,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,886.88 : 281,653.92 = 63,140.64 : x
  2. Step 2: Convert to fraction form
    187,886.88/281,653.92 = 63,140.64/x
  3. Step 3: Cross multiply
    187,886.88x = 281,653.92 × 63,140.64
  4. Step 4: Simplify right side
    187,886.88x = 17,783,808,767.31
  5. Step 5: Solve for x
    x = 17,783,808,767.31/187,886.88
  6. Step 6: Final answer
    x = 94,651.68

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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.