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Finding the Fourth Proportional to 103,663.52, 143,054.31 and 58,341.56

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Solution

The fourth proportional to 103,663.52, 143,054.31 and 58,341.56 is: 80,510.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,663.52 : 143,054.31 = 58,341.56 : x
  2. Step 2: Convert to fraction form
    103,663.52/143,054.31 = 58,341.56/x
  3. Step 3: Cross multiply
    103,663.52x = 143,054.31 × 58,341.56
  4. Step 4: Simplify right side
    103,663.52x = 8,346,011,610.12
  5. Step 5: Solve for x
    x = 8,346,011,610.12/103,663.52
  6. Step 6: Final answer
    x = 80,510.59

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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.