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Finding the Fourth Proportional to 307,036.55, 423,741.64 and 171,092.63

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Solution

The fourth proportional to 307,036.55, 423,741.64 and 171,092.63 is: 236,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,036.55 : 423,741.64 = 171,092.63 : x
  2. Step 2: Convert to fraction form
    307,036.55/423,741.64 = 171,092.63/x
  3. Step 3: Cross multiply
    307,036.55x = 423,741.64 × 171,092.63
  4. Step 4: Simplify right side
    307,036.55x = 72,499,071,628.11
  5. Step 5: Solve for x
    x = 72,499,071,628.11/307,036.55
  6. Step 6: Final answer
    x = 236,125.22

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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.