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Finding the Fourth Proportional to 66,509.65, 91,779.64 and 37,825.44

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Solution

The fourth proportional to 66,509.65, 91,779.64 and 37,825.44 is: 52,197.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.65 : 91,779.64 = 37,825.44 : x
  2. Step 2: Convert to fraction form
    66,509.65/91,779.64 = 37,825.44/x
  3. Step 3: Cross multiply
    66,509.65x = 91,779.64 × 37,825.44
  4. Step 4: Simplify right side
    66,509.65x = 3,471,605,266.04
  5. Step 5: Solve for x
    x = 3,471,605,266.04/66,509.65
  6. Step 6: Final answer
    x = 52,197.02

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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.