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Finding the Fourth Proportional to 62,939.76, 86,856.21 and 34,644.84

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Solution

The fourth proportional to 62,939.76, 86,856.21 and 34,644.84 is: 47,809.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,939.76 : 86,856.21 = 34,644.84 : x
  2. Step 2: Convert to fraction form
    62,939.76/86,856.21 = 34,644.84/x
  3. Step 3: Cross multiply
    62,939.76x = 86,856.21 × 34,644.84
  4. Step 4: Simplify right side
    62,939.76x = 3,009,119,498.46
  5. Step 5: Solve for x
    x = 3,009,119,498.46/62,939.76
  6. Step 6: Final answer
    x = 47,809.52

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1.5x scale

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.