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Finding the Fourth Proportional to 86,193.01, 129,317.11 and 35,615.80

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Solution

The fourth proportional to 86,193.01, 129,317.11 and 35,615.80 is: 53,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,193.01 : 129,317.11 = 35,615.80 : x
  2. Step 2: Convert to fraction form
    86,193.01/129,317.11 = 35,615.80/x
  3. Step 3: Cross multiply
    86,193.01x = 129,317.11 × 35,615.80
  4. Step 4: Simplify right side
    86,193.01x = 4,605,732,398.94
  5. Step 5: Solve for x
    x = 4,605,732,398.94/86,193.01
  6. Step 6: Final answer
    x = 53,435.10

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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.