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Finding the Fourth Proportional to 51,600.60, 77,400.90 and 30,864.60

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Solution

The fourth proportional to 51,600.60, 77,400.90 and 30,864.60 is: 46,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,600.60 : 77,400.90 = 30,864.60 : x
  2. Step 2: Convert to fraction form
    51,600.60/77,400.90 = 30,864.60/x
  3. Step 3: Cross multiply
    51,600.60x = 77,400.90 × 30,864.60
  4. Step 4: Simplify right side
    51,600.60x = 2,388,947,818.14
  5. Step 5: Solve for x
    x = 2,388,947,818.14/51,600.60
  6. Step 6: Final answer
    x = 46,296.90

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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.