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Finding the Fourth Proportional to 121,598.84, 182,675.05 and 87,968.59

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Solution

The fourth proportional to 121,598.84, 182,675.05 and 87,968.59 is: 132,153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,598.84 : 182,675.05 = 87,968.59 : x
  2. Step 2: Convert to fraction form
    121,598.84/182,675.05 = 87,968.59/x
  3. Step 3: Cross multiply
    121,598.84x = 182,675.05 × 87,968.59
  4. Step 4: Simplify right side
    121,598.84x = 16,069,665,900.07
  5. Step 5: Solve for x
    x = 16,069,665,900.07/121,598.84
  6. Step 6: Final answer
    x = 132,153.12

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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.