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Finding the Fourth Proportional to 97,072.55, 134,001.45 and 65,259.90

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Solution

The fourth proportional to 97,072.55, 134,001.45 and 65,259.90 is: 90,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,072.55 : 134,001.45 = 65,259.90 : x
  2. Step 2: Convert to fraction form
    97,072.55/134,001.45 = 65,259.90/x
  3. Step 3: Cross multiply
    97,072.55x = 134,001.45 × 65,259.90
  4. Step 4: Simplify right side
    97,072.55x = 8,744,920,479.62
  5. Step 5: Solve for x
    x = 8,744,920,479.62/97,072.55
  6. Step 6: Final answer
    x = 90,086.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.