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Finding the Fourth Proportional to 61,853.68, 85,301.76 and 52,313.56

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Solution

The fourth proportional to 61,853.68, 85,301.76 and 52,313.56 is: 72,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,853.68 : 85,301.76 = 52,313.56 : x
  2. Step 2: Convert to fraction form
    61,853.68/85,301.76 = 52,313.56/x
  3. Step 3: Cross multiply
    61,853.68x = 85,301.76 × 52,313.56
  4. Step 4: Simplify right side
    61,853.68x = 4,462,438,739.87
  5. Step 5: Solve for x
    x = 4,462,438,739.87/61,853.68
  6. Step 6: Final answer
    x = 72,145.08

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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.