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Finding the Fourth Proportional to 306,693.98, 460,090.91 and 90,574.58

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Solution

The fourth proportional to 306,693.98, 460,090.91 and 90,574.58 is: 135,876.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,693.98 : 460,090.91 = 90,574.58 : x
  2. Step 2: Convert to fraction form
    306,693.98/460,090.91 = 90,574.58/x
  3. Step 3: Cross multiply
    306,693.98x = 460,090.91 × 90,574.58
  4. Step 4: Simplify right side
    306,693.98x = 41,672,540,935.07
  5. Step 5: Solve for x
    x = 41,672,540,935.07/306,693.98
  6. Step 6: Final answer
    x = 135,876.62

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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.