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Finding the Fourth Proportional to 70,533.87, 97,336.76 and 40,319.87

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Solution

The fourth proportional to 70,533.87, 97,336.76 and 40,319.87 is: 55,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,533.87 : 97,336.76 = 40,319.87 : x
  2. Step 2: Convert to fraction form
    70,533.87/97,336.76 = 40,319.87/x
  3. Step 3: Cross multiply
    70,533.87x = 97,336.76 × 40,319.87
  4. Step 4: Simplify right side
    70,533.87x = 3,924,604,821.14
  5. Step 5: Solve for x
    x = 3,924,604,821.14/70,533.87
  6. Step 6: Final answer
    x = 55,641.42

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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.