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Finding the Fourth Proportional to 65,746.80, 98,490.60 and 39,373.20

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Solution

The fourth proportional to 65,746.80, 98,490.60 and 39,373.20 is: 58,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,746.80 : 98,490.60 = 39,373.20 : x
  2. Step 2: Convert to fraction form
    65,746.80/98,490.60 = 39,373.20/x
  3. Step 3: Cross multiply
    65,746.80x = 98,490.60 × 39,373.20
  4. Step 4: Simplify right side
    65,746.80x = 3,877,890,091.92
  5. Step 5: Solve for x
    x = 3,877,890,091.92/65,746.80
  6. Step 6: Final answer
    x = 58,982.19

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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.