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Finding the Fourth Proportional to 66,658.17, 91,988.33 and 36,443.01

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Solution

The fourth proportional to 66,658.17, 91,988.33 and 36,443.01 is: 50,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,658.17 : 91,988.33 = 36,443.01 : x
  2. Step 2: Convert to fraction form
    66,658.17/91,988.33 = 36,443.01/x
  3. Step 3: Cross multiply
    66,658.17x = 91,988.33 × 36,443.01
  4. Step 4: Simplify right side
    66,658.17x = 3,352,331,447.86
  5. Step 5: Solve for x
    x = 3,352,331,447.86/66,658.17
  6. Step 6: Final answer
    x = 50,291.38

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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.