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Finding the Fourth Proportional to 65,748.71, 98,647.92 and 39,471.77

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Solution

The fourth proportional to 65,748.71, 98,647.92 and 39,471.77 is: 59,222.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,748.71 : 98,647.92 = 39,471.77 : x
  2. Step 2: Convert to fraction form
    65,748.71/98,647.92 = 39,471.77/x
  3. Step 3: Cross multiply
    65,748.71x = 98,647.92 × 39,471.77
  4. Step 4: Simplify right side
    65,748.71x = 3,893,808,009.22
  5. Step 5: Solve for x
    x = 3,893,808,009.22/65,748.71
  6. Step 6: Final answer
    x = 59,222.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.