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Finding the Fourth Proportional to 73,118.40, 109,483.20 and 73,118.40

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Solution

The fourth proportional to 73,118.40, 109,483.20 and 73,118.40 is: 109,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,118.40 : 109,483.20 = 73,118.40 : x
  2. Step 2: Convert to fraction form
    73,118.40/109,483.20 = 73,118.40/x
  3. Step 3: Cross multiply
    73,118.40x = 109,483.20 × 73,118.40
  4. Step 4: Simplify right side
    73,118.40x = 8,005,236,410.88
  5. Step 5: Solve for x
    x = 8,005,236,410.88/73,118.40
  6. Step 6: Final answer
    x = 109,483.20

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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.