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Finding the Fourth Proportional to 73,218.96, 109,702.95 and 49,158.20

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Solution

The fourth proportional to 73,218.96, 109,702.95 and 49,158.20 is: 73,653.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,218.96 : 109,702.95 = 49,158.20 : x
  2. Step 2: Convert to fraction form
    73,218.96/109,702.95 = 49,158.20/x
  3. Step 3: Cross multiply
    73,218.96x = 109,702.95 × 49,158.20
  4. Step 4: Simplify right side
    73,218.96x = 5,392,798,823.83
  5. Step 5: Solve for x
    x = 5,392,798,823.83/73,218.96
  6. Step 6: Final answer
    x = 73,653.03

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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.