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Finding the Fourth Proportional to 112,813.80, 169,220.70 and 93,114.60

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Solution

The fourth proportional to 112,813.80, 169,220.70 and 93,114.60 is: 139,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,813.80 : 169,220.70 = 93,114.60 : x
  2. Step 2: Convert to fraction form
    112,813.80/169,220.70 = 93,114.60/x
  3. Step 3: Cross multiply
    112,813.80x = 169,220.70 × 93,114.60
  4. Step 4: Simplify right side
    112,813.80x = 15,756,917,792.22
  5. Step 5: Solve for x
    x = 15,756,917,792.22/112,813.80
  6. Step 6: Final answer
    x = 139,671.90

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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.