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Finding the Fourth Proportional to 64,821.20, 97,231.80 and 58,062.80

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Solution

The fourth proportional to 64,821.20, 97,231.80 and 58,062.80 is: 87,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,821.20 : 97,231.80 = 58,062.80 : x
  2. Step 2: Convert to fraction form
    64,821.20/97,231.80 = 58,062.80/x
  3. Step 3: Cross multiply
    64,821.20x = 97,231.80 × 58,062.80
  4. Step 4: Simplify right side
    64,821.20x = 5,645,550,557.04
  5. Step 5: Solve for x
    x = 5,645,550,557.04/64,821.20
  6. Step 6: Final answer
    x = 87,094.20

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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.