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Finding the Fourth Proportional to 62,488.80, 86,262.48 and 47,383.20

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Solution

The fourth proportional to 62,488.80, 86,262.48 and 47,383.20 is: 65,410.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,488.80 : 86,262.48 = 47,383.20 : x
  2. Step 2: Convert to fraction form
    62,488.80/86,262.48 = 47,383.20/x
  3. Step 3: Cross multiply
    62,488.80x = 86,262.48 × 47,383.20
  4. Step 4: Simplify right side
    62,488.80x = 4,087,392,342.34
  5. Step 5: Solve for x
    x = 4,087,392,342.34/62,488.80
  6. Step 6: Final answer
    x = 65,410.00

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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.