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Finding the Fourth Proportional to 92,643.60, 138,966.92 and 26,085.33

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Solution

The fourth proportional to 92,643.60, 138,966.92 and 26,085.33 is: 39,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,643.60 : 138,966.92 = 26,085.33 : x
  2. Step 2: Convert to fraction form
    92,643.60/138,966.92 = 26,085.33/x
  3. Step 3: Cross multiply
    92,643.60x = 138,966.92 × 26,085.33
  4. Step 4: Simplify right side
    92,643.60x = 3,624,997,967.28
  5. Step 5: Solve for x
    x = 3,624,997,967.28/92,643.60
  6. Step 6: Final answer
    x = 39,128.42

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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.