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Finding the Fourth Proportional to 66,097.20, 99,291.60 and 63,618.60

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Solution

The fourth proportional to 66,097.20, 99,291.60 and 63,618.60 is: 95,568.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,097.20 : 99,291.60 = 63,618.60 : x
  2. Step 2: Convert to fraction form
    66,097.20/99,291.60 = 63,618.60/x
  3. Step 3: Cross multiply
    66,097.20x = 99,291.60 × 63,618.60
  4. Step 4: Simplify right side
    66,097.20x = 6,316,792,583.76
  5. Step 5: Solve for x
    x = 6,316,792,583.76/66,097.20
  6. Step 6: Final answer
    x = 95,568.23

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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.