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Finding the Fourth Proportional to 79,497.42, 118,986.51 and 58,431.90

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Solution

The fourth proportional to 79,497.42, 118,986.51 and 58,431.90 is: 87,457.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,497.42 : 118,986.51 = 58,431.90 : x
  2. Step 2: Convert to fraction form
    79,497.42/118,986.51 = 58,431.90/x
  3. Step 3: Cross multiply
    79,497.42x = 118,986.51 × 58,431.90
  4. Step 4: Simplify right side
    79,497.42x = 6,952,607,853.67
  5. Step 5: Solve for x
    x = 6,952,607,853.67/79,497.42
  6. Step 6: Final answer
    x = 87,457.03

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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.