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Finding the Fourth Proportional to 49,385.80, 74,078.70 and 33,718.60

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Solution

The fourth proportional to 49,385.80, 74,078.70 and 33,718.60 is: 50,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,385.80 : 74,078.70 = 33,718.60 : x
  2. Step 2: Convert to fraction form
    49,385.80/74,078.70 = 33,718.60/x
  3. Step 3: Cross multiply
    49,385.80x = 74,078.70 × 33,718.60
  4. Step 4: Simplify right side
    49,385.80x = 2,497,830,053.82
  5. Step 5: Solve for x
    x = 2,497,830,053.82/49,385.80
  6. Step 6: Final answer
    x = 50,577.90

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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.