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Finding the Fourth Proportional to 66,725.93, 92,029.77 and 42,854.82

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Solution

The fourth proportional to 66,725.93, 92,029.77 and 42,854.82 is: 59,106.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,725.93 : 92,029.77 = 42,854.82 : x
  2. Step 2: Convert to fraction form
    66,725.93/92,029.77 = 42,854.82/x
  3. Step 3: Cross multiply
    66,725.93x = 92,029.77 × 42,854.82
  4. Step 4: Simplify right side
    66,725.93x = 3,943,919,400.55
  5. Step 5: Solve for x
    x = 3,943,919,400.55/66,725.93
  6. Step 6: Final answer
    x = 59,106.25

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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.