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Finding the Fourth Proportional to 61,573.86, 84,931.43 and 42,454.44

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Solution

The fourth proportional to 61,573.86, 84,931.43 and 42,454.44 is: 58,559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,573.86 : 84,931.43 = 42,454.44 : x
  2. Step 2: Convert to fraction form
    61,573.86/84,931.43 = 42,454.44/x
  3. Step 3: Cross multiply
    61,573.86x = 84,931.43 × 42,454.44
  4. Step 4: Simplify right side
    61,573.86x = 3,605,716,299.05
  5. Step 5: Solve for x
    x = 3,605,716,299.05/61,573.86
  6. Step 6: Final answer
    x = 58,559.21

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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.