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Finding the Fourth Proportional to 114,810.40, 171,908.40 and 73,031.20

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Solution

The fourth proportional to 114,810.40, 171,908.40 and 73,031.20 is: 109,351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,810.40 : 171,908.40 = 73,031.20 : x
  2. Step 2: Convert to fraction form
    114,810.40/171,908.40 = 73,031.20/x
  3. Step 3: Cross multiply
    114,810.40x = 171,908.40 × 73,031.20
  4. Step 4: Simplify right side
    114,810.40x = 12,554,676,742.08
  5. Step 5: Solve for x
    x = 12,554,676,742.08/114,810.40
  6. Step 6: Final answer
    x = 109,351.39

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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.