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Finding the Fourth Proportional to 61,811.40, 92,717.10 and 61,155.30

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Solution

The fourth proportional to 61,811.40, 92,717.10 and 61,155.30 is: 91,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,811.40 : 92,717.10 = 61,155.30 : x
  2. Step 2: Convert to fraction form
    61,811.40/92,717.10 = 61,155.30/x
  3. Step 3: Cross multiply
    61,811.40x = 92,717.10 × 61,155.30
  4. Step 4: Simplify right side
    61,811.40x = 5,670,142,065.63
  5. Step 5: Solve for x
    x = 5,670,142,065.63/61,811.40
  6. Step 6: Final answer
    x = 91,732.95

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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.