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Finding the Fourth Proportional to 60,690.86, 90,916.14 and 28,626.02

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Solution

The fourth proportional to 60,690.86, 90,916.14 and 28,626.02 is: 42,882.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,690.86 : 90,916.14 = 28,626.02 : x
  2. Step 2: Convert to fraction form
    60,690.86/90,916.14 = 28,626.02/x
  3. Step 3: Cross multiply
    60,690.86x = 90,916.14 × 28,626.02
  4. Step 4: Simplify right side
    60,690.86x = 2,602,567,241.96
  5. Step 5: Solve for x
    x = 2,602,567,241.96/60,690.86
  6. Step 6: Final answer
    x = 42,882.36

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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.