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Finding the Fourth Proportional to 64,121.10, 88,461.24 and 42,621.24

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Solution

The fourth proportional to 64,121.10, 88,461.24 and 42,621.24 is: 58,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,121.10 : 88,461.24 = 42,621.24 : x
  2. Step 2: Convert to fraction form
    64,121.10/88,461.24 = 42,621.24/x
  3. Step 3: Cross multiply
    64,121.10x = 88,461.24 × 42,621.24
  4. Step 4: Simplify right side
    64,121.10x = 3,770,327,740.74
  5. Step 5: Solve for x
    x = 3,770,327,740.74/64,121.10
  6. Step 6: Final answer
    x = 58,800.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.