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Finding the Fourth Proportional to 62,231.20, 93,346.80 and 20,678.20

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Solution

The fourth proportional to 62,231.20, 93,346.80 and 20,678.20 is: 31,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,231.20 : 93,346.80 = 20,678.20 : x
  2. Step 2: Convert to fraction form
    62,231.20/93,346.80 = 20,678.20/x
  3. Step 3: Cross multiply
    62,231.20x = 93,346.80 × 20,678.20
  4. Step 4: Simplify right side
    62,231.20x = 1,930,243,799.76
  5. Step 5: Solve for x
    x = 1,930,243,799.76/62,231.20
  6. Step 6: Final answer
    x = 31,017.30

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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.