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Finding the Fourth Proportional to 187,422.52, 258,617.58 and 111,955

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Solution

The fourth proportional to 187,422.52, 258,617.58 and 111,955 is: 154,482.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,422.52 : 258,617.58 = 111,955 : x
  2. Step 2: Convert to fraction form
    187,422.52/258,617.58 = 111,955/x
  3. Step 3: Cross multiply
    187,422.52x = 258,617.58 × 111,955
  4. Step 4: Simplify right side
    187,422.52x = 28,953,531,168.90
  5. Step 5: Solve for x
    x = 28,953,531,168.90/187,422.52
  6. Step 6: Final answer
    x = 154,482.67

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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.