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Finding the Fourth Proportional to 66,329.01, 91,589.13 and 61,521.05

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Solution

The fourth proportional to 66,329.01, 91,589.13 and 61,521.05 is: 84,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,329.01 : 91,589.13 = 61,521.05 : x
  2. Step 2: Convert to fraction form
    66,329.01/91,589.13 = 61,521.05/x
  3. Step 3: Cross multiply
    66,329.01x = 91,589.13 × 61,521.05
  4. Step 4: Simplify right side
    66,329.01x = 5,634,659,675.16
  5. Step 5: Solve for x
    x = 5,634,659,675.16/66,329.01
  6. Step 6: Final answer
    x = 84,950.15

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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.