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Finding the Fourth Proportional to 91,783.26, 137,658.51 and 58,404.24

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Solution

The fourth proportional to 91,783.26, 137,658.51 and 58,404.24 is: 87,595.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,783.26 : 137,658.51 = 58,404.24 : x
  2. Step 2: Convert to fraction form
    91,783.26/137,658.51 = 58,404.24/x
  3. Step 3: Cross multiply
    91,783.26x = 137,658.51 × 58,404.24
  4. Step 4: Simplify right side
    91,783.26x = 8,039,840,656.08
  5. Step 5: Solve for x
    x = 8,039,840,656.08/91,783.26
  6. Step 6: Final answer
    x = 87,595.94

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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.