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Finding the Fourth Proportional to 91,078.53, 125,722.94 and 68,483.10

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Solution

The fourth proportional to 91,078.53, 125,722.94 and 68,483.10 is: 94,532.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,078.53 : 125,722.94 = 68,483.10 : x
  2. Step 2: Convert to fraction form
    91,078.53/125,722.94 = 68,483.10/x
  3. Step 3: Cross multiply
    91,078.53x = 125,722.94 × 68,483.10
  4. Step 4: Simplify right side
    91,078.53x = 8,609,896,801.36
  5. Step 5: Solve for x
    x = 8,609,896,801.36/91,078.53
  6. Step 6: Final answer
    x = 94,532.68

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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.