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Finding the Fourth Proportional to 61,841.88, 92,639.16 and 28,516.32

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Solution

The fourth proportional to 61,841.88, 92,639.16 and 28,516.32 is: 42,717.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,841.88 : 92,639.16 = 28,516.32 : x
  2. Step 2: Convert to fraction form
    61,841.88/92,639.16 = 28,516.32/x
  3. Step 3: Cross multiply
    61,841.88x = 92,639.16 × 28,516.32
  4. Step 4: Simplify right side
    61,841.88x = 2,641,727,931.09
  5. Step 5: Solve for x
    x = 2,641,727,931.09/61,841.88
  6. Step 6: Final answer
    x = 42,717.46

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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.