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Finding the Fourth Proportional to 193,423.80, 290,135.70 and 127,068.60

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Solution

The fourth proportional to 193,423.80, 290,135.70 and 127,068.60 is: 190,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,423.80 : 290,135.70 = 127,068.60 : x
  2. Step 2: Convert to fraction form
    193,423.80/290,135.70 = 127,068.60/x
  3. Step 3: Cross multiply
    193,423.80x = 290,135.70 × 127,068.60
  4. Step 4: Simplify right side
    193,423.80x = 36,867,137,209.02
  5. Step 5: Solve for x
    x = 36,867,137,209.02/193,423.80
  6. Step 6: Final answer
    x = 190,602.90

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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.