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Finding the Fourth Proportional to 118,885.42, 178,326.36 and 28,928.98

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Solution

The fourth proportional to 118,885.42, 178,326.36 and 28,928.98 is: 43,393.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,885.42 : 178,326.36 = 28,928.98 : x
  2. Step 2: Convert to fraction form
    118,885.42/178,326.36 = 28,928.98/x
  3. Step 3: Cross multiply
    118,885.42x = 178,326.36 × 28,928.98
  4. Step 4: Simplify right side
    118,885.42x = 5,158,799,701.91
  5. Step 5: Solve for x
    x = 5,158,799,701.91/118,885.42
  6. Step 6: Final answer
    x = 43,393.04

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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.