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Finding the Fourth Proportional to 93,166.80, 139,750.20 and 91,854.60

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Solution

The fourth proportional to 93,166.80, 139,750.20 and 91,854.60 is: 137,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,166.80 : 139,750.20 = 91,854.60 : x
  2. Step 2: Convert to fraction form
    93,166.80/139,750.20 = 91,854.60/x
  3. Step 3: Cross multiply
    93,166.80x = 139,750.20 × 91,854.60
  4. Step 4: Simplify right side
    93,166.80x = 12,836,698,720.92
  5. Step 5: Solve for x
    x = 12,836,698,720.92/93,166.80
  6. Step 6: Final answer
    x = 137,781.90

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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.