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Finding the Fourth Proportional to 70,909.04, 97,865.28 and 53,885.54

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Solution

The fourth proportional to 70,909.04, 97,865.28 and 53,885.54 is: 74,370.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.04 : 97,865.28 = 53,885.54 : x
  2. Step 2: Convert to fraction form
    70,909.04/97,865.28 = 53,885.54/x
  3. Step 3: Cross multiply
    70,909.04x = 97,865.28 × 53,885.54
  4. Step 4: Simplify right side
    70,909.04x = 5,273,523,460.05
  5. Step 5: Solve for x
    x = 5,273,523,460.05/70,909.04
  6. Step 6: Final answer
    x = 74,370.26

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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.