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Finding the Fourth Proportional to 75,663.01, 104,456.93 and 45,455.78

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Solution

The fourth proportional to 75,663.01, 104,456.93 and 45,455.78 is: 62,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,663.01 : 104,456.93 = 45,455.78 : x
  2. Step 2: Convert to fraction form
    75,663.01/104,456.93 = 45,455.78/x
  3. Step 3: Cross multiply
    75,663.01x = 104,456.93 × 45,455.78
  4. Step 4: Simplify right side
    75,663.01x = 4,748,171,263.42
  5. Step 5: Solve for x
    x = 4,748,171,263.42/75,663.01
  6. Step 6: Final answer
    x = 62,754.19

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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.