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Finding the Fourth Proportional to 236,909.50, 355,425.81 and 70,697.50

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Solution

The fourth proportional to 236,909.50, 355,425.81 and 70,697.50 is: 106,064.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,909.50 : 355,425.81 = 70,697.50 : x
  2. Step 2: Convert to fraction form
    236,909.50/355,425.81 = 70,697.50/x
  3. Step 3: Cross multiply
    236,909.50x = 355,425.81 × 70,697.50
  4. Step 4: Simplify right side
    236,909.50x = 25,127,716,202.48
  5. Step 5: Solve for x
    x = 25,127,716,202.48/236,909.50
  6. Step 6: Final answer
    x = 106,064.62

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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.