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Finding the Fourth Proportional to 307,071.60, 423,748.02 and 171,098.52

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Solution

The fourth proportional to 307,071.60, 423,748.02 and 171,098.52 is: 236,109.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,071.60 : 423,748.02 = 171,098.52 : x
  2. Step 2: Convert to fraction form
    307,071.60/423,748.02 = 171,098.52/x
  3. Step 3: Cross multiply
    307,071.60x = 423,748.02 × 171,098.52
  4. Step 4: Simplify right side
    307,071.60x = 72,502,659,074.93
  5. Step 5: Solve for x
    x = 72,502,659,074.93/307,071.60
  6. Step 6: Final answer
    x = 236,109.95

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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.