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Finding the Fourth Proportional to 62,970.54, 86,890.50 and 34,678.08

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Solution

The fourth proportional to 62,970.54, 86,890.50 and 34,678.08 is: 47,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,970.54 : 86,890.50 = 34,678.08 : x
  2. Step 2: Convert to fraction form
    62,970.54/86,890.50 = 34,678.08/x
  3. Step 3: Cross multiply
    62,970.54x = 86,890.50 × 34,678.08
  4. Step 4: Simplify right side
    62,970.54x = 3,013,195,710.24
  5. Step 5: Solve for x
    x = 3,013,195,710.24/62,970.54
  6. Step 6: Final answer
    x = 47,850.88

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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.