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Finding the Fourth Proportional to 61,878.35, 92,802.64 and 28,566.43

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Solution

The fourth proportional to 61,878.35, 92,802.64 and 28,566.43 is: 42,842.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.35 : 92,802.64 = 28,566.43 : x
  2. Step 2: Convert to fraction form
    61,878.35/92,802.64 = 28,566.43/x
  3. Step 3: Cross multiply
    61,878.35x = 92,802.64 × 28,566.43
  4. Step 4: Simplify right side
    61,878.35x = 2,651,040,271.09
  5. Step 5: Solve for x
    x = 2,651,040,271.09/61,878.35
  6. Step 6: Final answer
    x = 42,842.77

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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.