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Finding the Fourth Proportional to 60,682.86, 90,904.14 and 28,618.02

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Solution

The fourth proportional to 60,682.86, 90,904.14 and 28,618.02 is: 42,870.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,682.86 : 90,904.14 = 28,618.02 : x
  2. Step 2: Convert to fraction form
    60,682.86/90,904.14 = 28,618.02/x
  3. Step 3: Cross multiply
    60,682.86x = 90,904.14 × 28,618.02
  4. Step 4: Simplify right side
    60,682.86x = 2,601,496,496.60
  5. Step 5: Solve for x
    x = 2,601,496,496.60/60,682.86
  6. Step 6: Final answer
    x = 42,870.37

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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.