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Finding the Fourth Proportional to 96,628.60, 144,942.90 and 93,129.40

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Solution

The fourth proportional to 96,628.60, 144,942.90 and 93,129.40 is: 139,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,628.60 : 144,942.90 = 93,129.40 : x
  2. Step 2: Convert to fraction form
    96,628.60/144,942.90 = 93,129.40/x
  3. Step 3: Cross multiply
    96,628.60x = 144,942.90 × 93,129.40
  4. Step 4: Simplify right side
    96,628.60x = 13,498,445,311.26
  5. Step 5: Solve for x
    x = 13,498,445,311.26/96,628.60
  6. Step 6: Final answer
    x = 139,694.10

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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.