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Finding the Fourth Proportional to 61,292.71, 84,612.90 and 40,908.52

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Solution

The fourth proportional to 61,292.71, 84,612.90 and 40,908.52 is: 56,473.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,292.71 : 84,612.90 = 40,908.52 : x
  2. Step 2: Convert to fraction form
    61,292.71/84,612.90 = 40,908.52/x
  3. Step 3: Cross multiply
    61,292.71x = 84,612.90 × 40,908.52
  4. Step 4: Simplify right side
    61,292.71x = 3,461,388,511.91
  5. Step 5: Solve for x
    x = 3,461,388,511.91/61,292.71
  6. Step 6: Final answer
    x = 56,473.09

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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.