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Finding the Fourth Proportional to 66,065.20, 98,809.80 and 59,095.60

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Solution

The fourth proportional to 66,065.20, 98,809.80 and 59,095.60 is: 88,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,065.20 : 98,809.80 = 59,095.60 : x
  2. Step 2: Convert to fraction form
    66,065.20/98,809.80 = 59,095.60/x
  3. Step 3: Cross multiply
    66,065.20x = 98,809.80 × 59,095.60
  4. Step 4: Simplify right side
    66,065.20x = 5,839,224,416.88
  5. Step 5: Solve for x
    x = 5,839,224,416.88/66,065.20
  6. Step 6: Final answer
    x = 88,385.78

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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.