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Finding the Fourth Proportional to 66,309.96, 99,371.74 and 56,410.12

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Solution

The fourth proportional to 66,309.96, 99,371.74 and 56,410.12 is: 84,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.96 : 99,371.74 = 56,410.12 : x
  2. Step 2: Convert to fraction form
    66,309.96/99,371.74 = 56,410.12/x
  3. Step 3: Cross multiply
    66,309.96x = 99,371.74 × 56,410.12
  4. Step 4: Simplify right side
    66,309.96x = 5,605,571,778.01
  5. Step 5: Solve for x
    x = 5,605,571,778.01/66,309.96
  6. Step 6: Final answer
    x = 84,535.89

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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.