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Finding the Fourth Proportional to 92,486.61, 138,645 and 33,307.92

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Solution

The fourth proportional to 92,486.61, 138,645 and 33,307.92 is: 49,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,486.61 : 138,645 = 33,307.92 : x
  2. Step 2: Convert to fraction form
    92,486.61/138,645 = 33,307.92/x
  3. Step 3: Cross multiply
    92,486.61x = 138,645 × 33,307.92
  4. Step 4: Simplify right side
    92,486.61x = 4,617,976,568.40
  5. Step 5: Solve for x
    x = 4,617,976,568.40/92,486.61
  6. Step 6: Final answer
    x = 49,931.30

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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.