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Finding the Fourth Proportional to 68,015.16, 93,631.14 and 56,059.56

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Solution

The fourth proportional to 68,015.16, 93,631.14 and 56,059.56 is: 77,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,015.16 : 93,631.14 = 56,059.56 : x
  2. Step 2: Convert to fraction form
    68,015.16/93,631.14 = 56,059.56/x
  3. Step 3: Cross multiply
    68,015.16x = 93,631.14 × 56,059.56
  4. Step 4: Simplify right side
    68,015.16x = 5,248,920,510.70
  5. Step 5: Solve for x
    x = 5,248,920,510.70/68,015.16
  6. Step 6: Final answer
    x = 77,172.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.