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Finding the Fourth Proportional to 60,381.44, 90,408 and 35,384.64

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Solution

The fourth proportional to 60,381.44, 90,408 and 35,384.64 is: 52,980.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,381.44 : 90,408 = 35,384.64 : x
  2. Step 2: Convert to fraction form
    60,381.44/90,408 = 35,384.64/x
  3. Step 3: Cross multiply
    60,381.44x = 90,408 × 35,384.64
  4. Step 4: Simplify right side
    60,381.44x = 3,199,054,533.12
  5. Step 5: Solve for x
    x = 3,199,054,533.12/60,381.44
  6. Step 6: Final answer
    x = 52,980.76

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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.