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Finding the Fourth Proportional to 61,686.60, 92,516.04 and 28,374.64

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Solution

The fourth proportional to 61,686.60, 92,516.04 and 28,374.64 is: 42,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.60 : 92,516.04 = 28,374.64 : x
  2. Step 2: Convert to fraction form
    61,686.60/92,516.04 = 28,374.64/x
  3. Step 3: Cross multiply
    61,686.60x = 92,516.04 × 28,374.64
  4. Step 4: Simplify right side
    61,686.60x = 2,625,109,097.94
  5. Step 5: Solve for x
    x = 2,625,109,097.94/61,686.60
  6. Step 6: Final answer
    x = 42,555.58

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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.