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Finding the Fourth Proportional to 62,700.70, 86,528.34 and 34,406.44

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Solution

The fourth proportional to 62,700.70, 86,528.34 and 34,406.44 is: 47,481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,700.70 : 86,528.34 = 34,406.44 : x
  2. Step 2: Convert to fraction form
    62,700.70/86,528.34 = 34,406.44/x
  3. Step 3: Cross multiply
    62,700.70x = 86,528.34 × 34,406.44
  4. Step 4: Simplify right side
    62,700.70x = 2,977,132,138.51
  5. Step 5: Solve for x
    x = 2,977,132,138.51/62,700.70
  6. Step 6: Final answer
    x = 47,481.64

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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.