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Finding the Fourth Proportional to 65,772.71, 98,683.92 and 39,495.77

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Solution

The fourth proportional to 65,772.71, 98,683.92 and 39,495.77 is: 59,258.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,772.71 : 98,683.92 = 39,495.77 : x
  2. Step 2: Convert to fraction form
    65,772.71/98,683.92 = 39,495.77/x
  3. Step 3: Cross multiply
    65,772.71x = 98,683.92 × 39,495.77
  4. Step 4: Simplify right side
    65,772.71x = 3,897,597,407.02
  5. Step 5: Solve for x
    x = 3,897,597,407.02/65,772.71
  6. Step 6: Final answer
    x = 59,258.58

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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.