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Finding the Fourth Proportional to 66,803.08, 92,143.92 and 42,959.92

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Solution

The fourth proportional to 66,803.08, 92,143.92 and 42,959.92 is: 59,256.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,803.08 : 92,143.92 = 42,959.92 : x
  2. Step 2: Convert to fraction form
    66,803.08/92,143.92 = 42,959.92/x
  3. Step 3: Cross multiply
    66,803.08x = 92,143.92 × 42,959.92
  4. Step 4: Simplify right side
    66,803.08x = 3,958,495,431.69
  5. Step 5: Solve for x
    x = 3,958,495,431.69/66,803.08
  6. Step 6: Final answer
    x = 59,256.18

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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.