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Finding the Fourth Proportional to 74,484.60, 102,758.22 and 47,619.96

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Solution

The fourth proportional to 74,484.60, 102,758.22 and 47,619.96 is: 65,696.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,484.60 : 102,758.22 = 47,619.96 : x
  2. Step 2: Convert to fraction form
    74,484.60/102,758.22 = 47,619.96/x
  3. Step 3: Cross multiply
    74,484.60x = 102,758.22 × 47,619.96
  4. Step 4: Simplify right side
    74,484.60x = 4,893,342,326.07
  5. Step 5: Solve for x
    x = 4,893,342,326.07/74,484.60
  6. Step 6: Final answer
    x = 65,696.03

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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.