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Finding the Fourth Proportional to 56,803.68, 85,218.96 and 25,638.72

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Solution

The fourth proportional to 56,803.68, 85,218.96 and 25,638.72 is: 38,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,803.68 : 85,218.96 = 25,638.72 : x
  2. Step 2: Convert to fraction form
    56,803.68/85,218.96 = 25,638.72/x
  3. Step 3: Cross multiply
    56,803.68x = 85,218.96 × 25,638.72
  4. Step 4: Simplify right side
    56,803.68x = 2,184,905,054.13
  5. Step 5: Solve for x
    x = 2,184,905,054.13/56,803.68
  6. Step 6: Final answer
    x = 38,464.15

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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.