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Finding the Fourth Proportional to 73,253.40, 109,880.10 and 43,315.80

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Solution

The fourth proportional to 73,253.40, 109,880.10 and 43,315.80 is: 64,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,253.40 : 109,880.10 = 43,315.80 : x
  2. Step 2: Convert to fraction form
    73,253.40/109,880.10 = 43,315.80/x
  3. Step 3: Cross multiply
    73,253.40x = 109,880.10 × 43,315.80
  4. Step 4: Simplify right side
    73,253.40x = 4,759,544,435.58
  5. Step 5: Solve for x
    x = 4,759,544,435.58/73,253.40
  6. Step 6: Final answer
    x = 64,973.70

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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.