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Finding the Fourth Proportional to 98,114.40, 147,171.60 and 64,653.30

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Solution

The fourth proportional to 98,114.40, 147,171.60 and 64,653.30 is: 96,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,114.40 : 147,171.60 = 64,653.30 : x
  2. Step 2: Convert to fraction form
    98,114.40/147,171.60 = 64,653.30/x
  3. Step 3: Cross multiply
    98,114.40x = 147,171.60 × 64,653.30
  4. Step 4: Simplify right side
    98,114.40x = 9,515,129,606.28
  5. Step 5: Solve for x
    x = 9,515,129,606.28/98,114.40
  6. Step 6: Final answer
    x = 96,979.95

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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.