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Finding the Fourth Proportional to 91,705.59, 137,529.97 and 44,291.21

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Solution

The fourth proportional to 91,705.59, 137,529.97 and 44,291.21 is: 66,423.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,705.59 : 137,529.97 = 44,291.21 : x
  2. Step 2: Convert to fraction form
    91,705.59/137,529.97 = 44,291.21/x
  3. Step 3: Cross multiply
    91,705.59x = 137,529.97 × 44,291.21
  4. Step 4: Simplify right side
    91,705.59x = 6,091,367,984.19
  5. Step 5: Solve for x
    x = 6,091,367,984.19/91,705.59
  6. Step 6: Final answer
    x = 66,423.08

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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.