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Finding the Fourth Proportional to 92,326, 138,433.58 and 42,343.48

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Solution

The fourth proportional to 92,326, 138,433.58 and 42,343.48 is: 63,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,326 : 138,433.58 = 42,343.48 : x
  2. Step 2: Convert to fraction form
    92,326/138,433.58 = 42,343.48/x
  3. Step 3: Cross multiply
    92,326x = 138,433.58 × 42,343.48
  4. Step 4: Simplify right side
    92,326x = 5,861,759,526.06
  5. Step 5: Solve for x
    x = 5,861,759,526.06/92,326
  6. Step 6: Final answer
    x = 63,489.80

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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.