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Finding the Fourth Proportional to 111,495.56, 153,836.70 and 63,098.60

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Solution

The fourth proportional to 111,495.56, 153,836.70 and 63,098.60 is: 87,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,495.56 : 153,836.70 = 63,098.60 : x
  2. Step 2: Convert to fraction form
    111,495.56/153,836.70 = 63,098.60/x
  3. Step 3: Cross multiply
    111,495.56x = 153,836.70 × 63,098.60
  4. Step 4: Simplify right side
    111,495.56x = 9,706,880,398.62
  5. Step 5: Solve for x
    x = 9,706,880,398.62/111,495.56
  6. Step 6: Final answer
    x = 87,060.69

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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.