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Finding the Fourth Proportional to 91,302.75, 136,954.17 and 28,973.25

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Solution

The fourth proportional to 91,302.75, 136,954.17 and 28,973.25 is: 43,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,302.75 : 136,954.17 = 28,973.25 : x
  2. Step 2: Convert to fraction form
    91,302.75/136,954.17 = 28,973.25/x
  3. Step 3: Cross multiply
    91,302.75x = 136,954.17 × 28,973.25
  4. Step 4: Simplify right side
    91,302.75x = 3,968,007,405.95
  5. Step 5: Solve for x
    x = 3,968,007,405.95/91,302.75
  6. Step 6: Final answer
    x = 43,459.89

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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.