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Finding the Fourth Proportional to 66,802.59, 92,143.22 and 42,959.43

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Solution

The fourth proportional to 66,802.59, 92,143.22 and 42,959.43 is: 59,255.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,802.59 : 92,143.22 = 42,959.43 : x
  2. Step 2: Convert to fraction form
    66,802.59/92,143.22 = 42,959.43/x
  3. Step 3: Cross multiply
    66,802.59x = 92,143.22 × 42,959.43
  4. Step 4: Simplify right side
    66,802.59x = 3,958,419,534.05
  5. Step 5: Solve for x
    x = 3,958,419,534.05/66,802.59
  6. Step 6: Final answer
    x = 59,255.48

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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.