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Finding the Fourth Proportional to 74,493.90, 104,429.70 and 74,493.90

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Solution

The fourth proportional to 74,493.90, 104,429.70 and 74,493.90 is: 104,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,493.90 : 104,429.70 = 74,493.90 : x
  2. Step 2: Convert to fraction form
    74,493.90/104,429.70 = 74,493.90/x
  3. Step 3: Cross multiply
    74,493.90x = 104,429.70 × 74,493.90
  4. Step 4: Simplify right side
    74,493.90x = 7,779,375,628.83
  5. Step 5: Solve for x
    x = 7,779,375,628.83/74,493.90
  6. Step 6: Final answer
    x = 104,429.70

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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.