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Finding the Fourth Proportional to 67,442.44, 101,278.47 and 64,621.21

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Solution

The fourth proportional to 67,442.44, 101,278.47 and 64,621.21 is: 97,041.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,442.44 : 101,278.47 = 64,621.21 : x
  2. Step 2: Convert to fraction form
    67,442.44/101,278.47 = 64,621.21/x
  3. Step 3: Cross multiply
    67,442.44x = 101,278.47 × 64,621.21
  4. Step 4: Simplify right side
    67,442.44x = 6,544,736,771.96
  5. Step 5: Solve for x
    x = 6,544,736,771.96/67,442.44
  6. Step 6: Final answer
    x = 97,041.82

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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.