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Finding the Fourth Proportional to 118,670.80, 178,071.72 and 48,599.20

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Solution

The fourth proportional to 118,670.80, 178,071.72 and 48,599.20 is: 72,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,670.80 : 178,071.72 = 48,599.20 : x
  2. Step 2: Convert to fraction form
    118,670.80/178,071.72 = 48,599.20/x
  3. Step 3: Cross multiply
    118,670.80x = 178,071.72 × 48,599.20
  4. Step 4: Simplify right side
    118,670.80x = 8,654,143,134.62
  5. Step 5: Solve for x
    x = 8,654,143,134.62/118,670.80
  6. Step 6: Final answer
    x = 72,925.63

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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.