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Finding the Fourth Proportional to 66,533.99, 91,656.14 and 56,943.09

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Solution

The fourth proportional to 66,533.99, 91,656.14 and 56,943.09 is: 78,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,533.99 : 91,656.14 = 56,943.09 : x
  2. Step 2: Convert to fraction form
    66,533.99/91,656.14 = 56,943.09/x
  3. Step 3: Cross multiply
    66,533.99x = 91,656.14 × 56,943.09
  4. Step 4: Simplify right side
    66,533.99x = 5,219,183,544.36
  5. Step 5: Solve for x
    x = 5,219,183,544.36/66,533.99
  6. Step 6: Final answer
    x = 78,443.87

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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.