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Finding the Fourth Proportional to 79,699.12, 110,083.56 and 57,860.56

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Solution

The fourth proportional to 79,699.12, 110,083.56 and 57,860.56 is: 79,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.12 : 110,083.56 = 57,860.56 : x
  2. Step 2: Convert to fraction form
    79,699.12/110,083.56 = 57,860.56/x
  3. Step 3: Cross multiply
    79,699.12x = 110,083.56 × 57,860.56
  4. Step 4: Simplify right side
    79,699.12x = 6,369,496,116.81
  5. Step 5: Solve for x
    x = 6,369,496,116.81/79,699.12
  6. Step 6: Final answer
    x = 79,919.28

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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.