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Finding the Fourth Proportional to 112,488.96, 168,995.88 and 65,774.64

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Solution

The fourth proportional to 112,488.96, 168,995.88 and 65,774.64 is: 98,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,488.96 : 168,995.88 = 65,774.64 : x
  2. Step 2: Convert to fraction form
    112,488.96/168,995.88 = 65,774.64/x
  3. Step 3: Cross multiply
    112,488.96x = 168,995.88 × 65,774.64
  4. Step 4: Simplify right side
    112,488.96x = 11,115,643,168.48
  5. Step 5: Solve for x
    x = 11,115,643,168.48/112,488.96
  6. Step 6: Final answer
    x = 98,815.41

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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.