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Finding the Fourth Proportional to 164,321.61, 226,703.05 and 121,404.47

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Solution

The fourth proportional to 164,321.61, 226,703.05 and 121,404.47 is: 167,493.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,321.61 : 226,703.05 = 121,404.47 : x
  2. Step 2: Convert to fraction form
    164,321.61/226,703.05 = 121,404.47/x
  3. Step 3: Cross multiply
    164,321.61x = 226,703.05 × 121,404.47
  4. Step 4: Simplify right side
    164,321.61x = 27,522,764,153.71
  5. Step 5: Solve for x
    x = 27,522,764,153.71/164,321.61
  6. Step 6: Final answer
    x = 167,493.27

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1.5x scale

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.