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Finding the Fourth Proportional to 62,421.80, 93,632.70 and 54,645.80

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Solution

The fourth proportional to 62,421.80, 93,632.70 and 54,645.80 is: 81,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,421.80 : 93,632.70 = 54,645.80 : x
  2. Step 2: Convert to fraction form
    62,421.80/93,632.70 = 54,645.80/x
  3. Step 3: Cross multiply
    62,421.80x = 93,632.70 × 54,645.80
  4. Step 4: Simplify right side
    62,421.80x = 5,116,633,797.66
  5. Step 5: Solve for x
    x = 5,116,633,797.66/62,421.80
  6. Step 6: Final answer
    x = 81,968.70

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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.