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Finding the Fourth Proportional to 55,943.40, 83,838.30 and 45,575.40

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Solution

The fourth proportional to 55,943.40, 83,838.30 and 45,575.40 is: 68,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,943.40 : 83,838.30 = 45,575.40 : x
  2. Step 2: Convert to fraction form
    55,943.40/83,838.30 = 45,575.40/x
  3. Step 3: Cross multiply
    55,943.40x = 83,838.30 × 45,575.40
  4. Step 4: Simplify right side
    55,943.40x = 3,820,964,057.82
  5. Step 5: Solve for x
    x = 3,820,964,057.82/55,943.40
  6. Step 6: Final answer
    x = 68,300.53

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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.