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Finding the Fourth Proportional to 68,706.84, 103,528.27 and 56,500.28

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Solution

The fourth proportional to 68,706.84, 103,528.27 and 56,500.28 is: 85,135.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.84 : 103,528.27 = 56,500.28 : x
  2. Step 2: Convert to fraction form
    68,706.84/103,528.27 = 56,500.28/x
  3. Step 3: Cross multiply
    68,706.84x = 103,528.27 × 56,500.28
  4. Step 4: Simplify right side
    68,706.84x = 5,849,376,184.13
  5. Step 5: Solve for x
    x = 5,849,376,184.13/68,706.84
  6. Step 6: Final answer
    x = 85,135.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.