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Finding the Fourth Proportional to 56,689.60, 84,832.80 and 49,374.40

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Solution

The fourth proportional to 56,689.60, 84,832.80 and 49,374.40 is: 73,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,689.60 : 84,832.80 = 49,374.40 : x
  2. Step 2: Convert to fraction form
    56,689.60/84,832.80 = 49,374.40/x
  3. Step 3: Cross multiply
    56,689.60x = 84,832.80 × 49,374.40
  4. Step 4: Simplify right side
    56,689.60x = 4,188,568,600.32
  5. Step 5: Solve for x
    x = 4,188,568,600.32/56,689.60
  6. Step 6: Final answer
    x = 73,886.01

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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.