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Finding the Fourth Proportional to 90,953.69, 125,468.19 and 60,740.28

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Solution

The fourth proportional to 90,953.69, 125,468.19 and 60,740.28 is: 83,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,953.69 : 125,468.19 = 60,740.28 : x
  2. Step 2: Convert to fraction form
    90,953.69/125,468.19 = 60,740.28/x
  3. Step 3: Cross multiply
    90,953.69x = 125,468.19 × 60,740.28
  4. Step 4: Simplify right side
    90,953.69x = 7,620,972,991.69
  5. Step 5: Solve for x
    x = 7,620,972,991.69/90,953.69
  6. Step 6: Final answer
    x = 83,789.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.