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Finding the Fourth Proportional to 86,950.92, 130,410.96 and 39,555

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Solution

The fourth proportional to 86,950.92, 130,410.96 and 39,555 is: 59,325.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,950.92 : 130,410.96 = 39,555 : x
  2. Step 2: Convert to fraction form
    86,950.92/130,410.96 = 39,555/x
  3. Step 3: Cross multiply
    86,950.92x = 130,410.96 × 39,555
  4. Step 4: Simplify right side
    86,950.92x = 5,158,405,522.80
  5. Step 5: Solve for x
    x = 5,158,405,522.80/86,950.92
  6. Step 6: Final answer
    x = 59,325.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.