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Finding the Fourth Proportional to 107,685, 148,605.30 and 62,973

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Solution

The fourth proportional to 107,685, 148,605.30 and 62,973 is: 86,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,685 : 148,605.30 = 62,973 : x
  2. Step 2: Convert to fraction form
    107,685/148,605.30 = 62,973/x
  3. Step 3: Cross multiply
    107,685x = 148,605.30 × 62,973
  4. Step 4: Simplify right side
    107,685x = 9,358,121,556.90
  5. Step 5: Solve for x
    x = 9,358,121,556.90/107,685
  6. Step 6: Final answer
    x = 86,902.74

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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.