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Finding the Fourth Proportional to 330,518.66, 456,078.66 and 187,248.02

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Solution

The fourth proportional to 330,518.66, 456,078.66 and 187,248.02 is: 258,381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,518.66 : 456,078.66 = 187,248.02 : x
  2. Step 2: Convert to fraction form
    330,518.66/456,078.66 = 187,248.02/x
  3. Step 3: Cross multiply
    330,518.66x = 456,078.66 × 187,248.02
  4. Step 4: Simplify right side
    330,518.66x = 85,399,826,049.25
  5. Step 5: Solve for x
    x = 85,399,826,049.25/330,518.66
  6. Step 6: Final answer
    x = 258,381.25

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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.