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Finding the Fourth Proportional to 58,663.99, 81,023.12 and 39,768.31

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Solution

The fourth proportional to 58,663.99, 81,023.12 and 39,768.31 is: 54,925.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,663.99 : 81,023.12 = 39,768.31 : x
  2. Step 2: Convert to fraction form
    58,663.99/81,023.12 = 39,768.31/x
  3. Step 3: Cross multiply
    58,663.99x = 81,023.12 × 39,768.31
  4. Step 4: Simplify right side
    58,663.99x = 3,222,152,553.33
  5. Step 5: Solve for x
    x = 3,222,152,553.33/58,663.99
  6. Step 6: Final answer
    x = 54,925.56

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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.