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Finding the Fourth Proportional to 92,739.33, 127,988.76 and 58,289.64

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Solution

The fourth proportional to 92,739.33, 127,988.76 and 58,289.64 is: 80,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,739.33 : 127,988.76 = 58,289.64 : x
  2. Step 2: Convert to fraction form
    92,739.33/127,988.76 = 58,289.64/x
  3. Step 3: Cross multiply
    92,739.33x = 127,988.76 × 58,289.64
  4. Step 4: Simplify right side
    92,739.33x = 7,460,418,744.45
  5. Step 5: Solve for x
    x = 7,460,418,744.45/92,739.33
  6. Step 6: Final answer
    x = 80,445.04

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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.