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Finding the Fourth Proportional to 91,900.35, 137,785.64 and 35,693.64

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Solution

The fourth proportional to 91,900.35, 137,785.64 and 35,693.64 is: 53,515.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,900.35 : 137,785.64 = 35,693.64 : x
  2. Step 2: Convert to fraction form
    91,900.35/137,785.64 = 35,693.64/x
  3. Step 3: Cross multiply
    91,900.35x = 137,785.64 × 35,693.64
  4. Step 4: Simplify right side
    91,900.35x = 4,918,070,852.86
  5. Step 5: Solve for x
    x = 4,918,070,852.86/91,900.35
  6. Step 6: Final answer
    x = 53,515.26

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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.