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Finding the Fourth Proportional to 61,898.79, 92,837.21 and 28,156.95

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Solution

The fourth proportional to 61,898.79, 92,837.21 and 28,156.95 is: 42,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.79 : 92,837.21 = 28,156.95 : x
  2. Step 2: Convert to fraction form
    61,898.79/92,837.21 = 28,156.95/x
  3. Step 3: Cross multiply
    61,898.79x = 92,837.21 × 28,156.95
  4. Step 4: Simplify right side
    61,898.79x = 2,614,012,539.32
  5. Step 5: Solve for x
    x = 2,614,012,539.32/61,898.79
  6. Step 6: Final answer
    x = 42,230.43

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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.