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Finding the Fourth Proportional to 76,755.48, 105,615.54 and 58,843.68

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Solution

The fourth proportional to 76,755.48, 105,615.54 and 58,843.68 is: 80,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,755.48 : 105,615.54 = 58,843.68 : x
  2. Step 2: Convert to fraction form
    76,755.48/105,615.54 = 58,843.68/x
  3. Step 3: Cross multiply
    76,755.48x = 105,615.54 × 58,843.68
  4. Step 4: Simplify right side
    76,755.48x = 6,214,807,038.79
  5. Step 5: Solve for x
    x = 6,214,807,038.79/76,755.48
  6. Step 6: Final answer
    x = 80,968.90

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1.5x scale

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.