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Finding the Fourth Proportional to 108,673.80, 162,816.30 and 93,121.80

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Solution

The fourth proportional to 108,673.80, 162,816.30 and 93,121.80 is: 139,516.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,673.80 : 162,816.30 = 93,121.80 : x
  2. Step 2: Convert to fraction form
    108,673.80/162,816.30 = 93,121.80/x
  3. Step 3: Cross multiply
    108,673.80x = 162,816.30 × 93,121.80
  4. Step 4: Simplify right side
    108,673.80x = 15,161,746,925.34
  5. Step 5: Solve for x
    x = 15,161,746,925.34/108,673.80
  6. Step 6: Final answer
    x = 139,516.12

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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.