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Finding the Fourth Proportional to 66,462.80, 99,629.40 and 59,464.40

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Solution

The fourth proportional to 66,462.80, 99,629.40 and 59,464.40 is: 89,138.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.80 : 99,629.40 = 59,464.40 : x
  2. Step 2: Convert to fraction form
    66,462.80/99,629.40 = 59,464.40/x
  3. Step 3: Cross multiply
    66,462.80x = 99,629.40 × 59,464.40
  4. Step 4: Simplify right side
    66,462.80x = 5,924,402,493.36
  5. Step 5: Solve for x
    x = 5,924,402,493.36/66,462.80
  6. Step 6: Final answer
    x = 89,138.62

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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.