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Finding the Fourth Proportional to 49,897.60, 74,932.80 and 48,342.40

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Solution

The fourth proportional to 49,897.60, 74,932.80 and 48,342.40 is: 72,597.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,897.60 : 74,932.80 = 48,342.40 : x
  2. Step 2: Convert to fraction form
    49,897.60/74,932.80 = 48,342.40/x
  3. Step 3: Cross multiply
    49,897.60x = 74,932.80 × 48,342.40
  4. Step 4: Simplify right side
    49,897.60x = 3,622,431,390.72
  5. Step 5: Solve for x
    x = 3,622,431,390.72/49,897.60
  6. Step 6: Final answer
    x = 72,597.31

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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.