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Finding the Fourth Proportional to 74,493.20, 111,739.80 and 60,496.40

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Solution

The fourth proportional to 74,493.20, 111,739.80 and 60,496.40 is: 90,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,493.20 : 111,739.80 = 60,496.40 : x
  2. Step 2: Convert to fraction form
    74,493.20/111,739.80 = 60,496.40/x
  3. Step 3: Cross multiply
    74,493.20x = 111,739.80 × 60,496.40
  4. Step 4: Simplify right side
    74,493.20x = 6,759,855,636.72
  5. Step 5: Solve for x
    x = 6,759,855,636.72/74,493.20
  6. Step 6: Final answer
    x = 90,744.60

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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.