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Finding the Fourth Proportional to 89,068.80, 133,603.20 and 81,033.60

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Solution

The fourth proportional to 89,068.80, 133,603.20 and 81,033.60 is: 121,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,068.80 : 133,603.20 = 81,033.60 : x
  2. Step 2: Convert to fraction form
    89,068.80/133,603.20 = 81,033.60/x
  3. Step 3: Cross multiply
    89,068.80x = 133,603.20 × 81,033.60
  4. Step 4: Simplify right side
    89,068.80x = 10,826,348,267.52
  5. Step 5: Solve for x
    x = 10,826,348,267.52/89,068.80
  6. Step 6: Final answer
    x = 121,550.40

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1.5x scale

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.