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Finding the Fourth Proportional to 65,220.60, 97,838.10 and 20,839.80

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Solution

The fourth proportional to 65,220.60, 97,838.10 and 20,839.80 is: 31,262.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,220.60 : 97,838.10 = 20,839.80 : x
  2. Step 2: Convert to fraction form
    65,220.60/97,838.10 = 20,839.80/x
  3. Step 3: Cross multiply
    65,220.60x = 97,838.10 × 20,839.80
  4. Step 4: Simplify right side
    65,220.60x = 2,038,926,436.38
  5. Step 5: Solve for x
    x = 2,038,926,436.38/65,220.60
  6. Step 6: Final answer
    x = 31,262.00

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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.