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Finding the Fourth Proportional to 303,774.80, 455,662.20 and 93,385.40

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Solution

The fourth proportional to 303,774.80, 455,662.20 and 93,385.40 is: 140,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,774.80 : 455,662.20 = 93,385.40 : x
  2. Step 2: Convert to fraction form
    303,774.80/455,662.20 = 93,385.40/x
  3. Step 3: Cross multiply
    303,774.80x = 455,662.20 × 93,385.40
  4. Step 4: Simplify right side
    303,774.80x = 42,552,196,811.88
  5. Step 5: Solve for x
    x = 42,552,196,811.88/303,774.80
  6. Step 6: Final answer
    x = 140,078.10

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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.