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Finding the Fourth Proportional to 62,600.40, 86,393.21 and 38,740.95

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Solution

The fourth proportional to 62,600.40, 86,393.21 and 38,740.95 is: 53,465.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,600.40 : 86,393.21 = 38,740.95 : x
  2. Step 2: Convert to fraction form
    62,600.40/86,393.21 = 38,740.95/x
  3. Step 3: Cross multiply
    62,600.40x = 86,393.21 × 38,740.95
  4. Step 4: Simplify right side
    62,600.40x = 3,346,954,835.24
  5. Step 5: Solve for x
    x = 3,346,954,835.24/62,600.40
  6. Step 6: Final answer
    x = 53,465.39

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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.