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Finding the Fourth Proportional to 66,458.80, 99,623.40 and 59,460.40

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Solution

The fourth proportional to 66,458.80, 99,623.40 and 59,460.40 is: 89,132.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458.80 : 99,623.40 = 59,460.40 : x
  2. Step 2: Convert to fraction form
    66,458.80/99,623.40 = 59,460.40/x
  3. Step 3: Cross multiply
    66,458.80x = 99,623.40 × 59,460.40
  4. Step 4: Simplify right side
    66,458.80x = 5,923,647,213.36
  5. Step 5: Solve for x
    x = 5,923,647,213.36/66,458.80
  6. Step 6: Final answer
    x = 89,132.62

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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.