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Finding the Fourth Proportional to 93,642.35, 140,768.01 and 75,124.94

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Solution

The fourth proportional to 93,642.35, 140,768.01 and 75,124.94 is: 112,931.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,642.35 : 140,768.01 = 75,124.94 : x
  2. Step 2: Convert to fraction form
    93,642.35/140,768.01 = 75,124.94/x
  3. Step 3: Cross multiply
    93,642.35x = 140,768.01 × 75,124.94
  4. Step 4: Simplify right side
    93,642.35x = 10,575,188,844.90
  5. Step 5: Solve for x
    x = 10,575,188,844.90/93,642.35
  6. Step 6: Final answer
    x = 112,931.69

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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.