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Finding the Fourth Proportional to 86,508.57, 129,817.53 and 33,916.68

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Solution

The fourth proportional to 86,508.57, 129,817.53 and 33,916.68 is: 50,896.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508.57 : 129,817.53 = 33,916.68 : x
  2. Step 2: Convert to fraction form
    86,508.57/129,817.53 = 33,916.68/x
  3. Step 3: Cross multiply
    86,508.57x = 129,817.53 × 33,916.68
  4. Step 4: Simplify right side
    86,508.57x = 4,402,979,623.40
  5. Step 5: Solve for x
    x = 4,402,979,623.40/86,508.57
  6. Step 6: Final answer
    x = 50,896.46

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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.