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Finding the Fourth Proportional to 213,793.14, 320,591.55 and 61,955.70

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Solution

The fourth proportional to 213,793.14, 320,591.55 and 61,955.70 is: 92,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,793.14 : 320,591.55 = 61,955.70 : x
  2. Step 2: Convert to fraction form
    213,793.14/320,591.55 = 61,955.70/x
  3. Step 3: Cross multiply
    213,793.14x = 320,591.55 × 61,955.70
  4. Step 4: Simplify right side
    213,793.14x = 19,862,473,894.34
  5. Step 5: Solve for x
    x = 19,862,473,894.34/213,793.14
  6. Step 6: Final answer
    x = 92,905.10

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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.