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Finding the Fourth Proportional to 65,393.98, 98,090.40 and 43,306.18

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Solution

The fourth proportional to 65,393.98, 98,090.40 and 43,306.18 is: 64,958.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,393.98 : 98,090.40 = 43,306.18 : x
  2. Step 2: Convert to fraction form
    65,393.98/98,090.40 = 43,306.18/x
  3. Step 3: Cross multiply
    65,393.98x = 98,090.40 × 43,306.18
  4. Step 4: Simplify right side
    65,393.98x = 4,247,920,518.67
  5. Step 5: Solve for x
    x = 4,247,920,518.67/65,393.98
  6. Step 6: Final answer
    x = 64,958.89

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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.