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Finding the Fourth Proportional to 74,657.90, 104,659.30 and 74,657.90

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Solution

The fourth proportional to 74,657.90, 104,659.30 and 74,657.90 is: 104,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,657.90 : 104,659.30 = 74,657.90 : x
  2. Step 2: Convert to fraction form
    74,657.90/104,659.30 = 74,657.90/x
  3. Step 3: Cross multiply
    74,657.90x = 104,659.30 × 74,657.90
  4. Step 4: Simplify right side
    74,657.90x = 7,813,643,553.47
  5. Step 5: Solve for x
    x = 7,813,643,553.47/74,657.90
  6. Step 6: Final answer
    x = 104,659.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.