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Finding the Fourth Proportional to 62,681.94, 86,452.20 and 38,821.86

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Solution

The fourth proportional to 62,681.94, 86,452.20 and 38,821.86 is: 53,543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,681.94 : 86,452.20 = 38,821.86 : x
  2. Step 2: Convert to fraction form
    62,681.94/86,452.20 = 38,821.86/x
  3. Step 3: Cross multiply
    62,681.94x = 86,452.20 × 38,821.86
  4. Step 4: Simplify right side
    62,681.94x = 3,356,235,205.09
  5. Step 5: Solve for x
    x = 3,356,235,205.09/62,681.94
  6. Step 6: Final answer
    x = 53,543.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.