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Finding the Fourth Proportional to 70,697.10, 97,557.93 and 38,865.99

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Solution

The fourth proportional to 70,697.10, 97,557.93 and 38,865.99 is: 53,632.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,697.10 : 97,557.93 = 38,865.99 : x
  2. Step 2: Convert to fraction form
    70,697.10/97,557.93 = 38,865.99/x
  3. Step 3: Cross multiply
    70,697.10x = 97,557.93 × 38,865.99
  4. Step 4: Simplify right side
    70,697.10x = 3,791,685,531.80
  5. Step 5: Solve for x
    x = 3,791,685,531.80/70,697.10
  6. Step 6: Final answer
    x = 53,632.83

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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.