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Finding the Fourth Proportional to 53,913.40, 80,870.10 and 53,567.80

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Solution

The fourth proportional to 53,913.40, 80,870.10 and 53,567.80 is: 80,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,913.40 : 80,870.10 = 53,567.80 : x
  2. Step 2: Convert to fraction form
    53,913.40/80,870.10 = 53,567.80/x
  3. Step 3: Cross multiply
    53,913.40x = 80,870.10 × 53,567.80
  4. Step 4: Simplify right side
    53,913.40x = 4,332,033,342.78
  5. Step 5: Solve for x
    x = 4,332,033,342.78/53,913.40
  6. Step 6: Final answer
    x = 80,351.70

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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.