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Finding the Fourth Proportional to 55,363.70, 83,045.55 and 51,645.80

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Solution

The fourth proportional to 55,363.70, 83,045.55 and 51,645.80 is: 77,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,363.70 : 83,045.55 = 51,645.80 : x
  2. Step 2: Convert to fraction form
    55,363.70/83,045.55 = 51,645.80/x
  3. Step 3: Cross multiply
    55,363.70x = 83,045.55 × 51,645.80
  4. Step 4: Simplify right side
    55,363.70x = 4,288,953,866.19
  5. Step 5: Solve for x
    x = 4,288,953,866.19/55,363.70
  6. Step 6: Final answer
    x = 77,468.70

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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.