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Finding the Fourth Proportional to 92,336.60, 138,464.40 and 42,400.10

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Solution

The fourth proportional to 92,336.60, 138,464.40 and 42,400.10 is: 63,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,336.60 : 138,464.40 = 42,400.10 : x
  2. Step 2: Convert to fraction form
    92,336.60/138,464.40 = 42,400.10/x
  3. Step 3: Cross multiply
    92,336.60x = 138,464.40 × 42,400.10
  4. Step 4: Simplify right side
    92,336.60x = 5,870,904,406.44
  5. Step 5: Solve for x
    x = 5,870,904,406.44/92,336.60
  6. Step 6: Final answer
    x = 63,581.55

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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.