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Finding the Fourth Proportional to 58,539.85, 80,784.41 and 31,681.80

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Solution

The fourth proportional to 58,539.85, 80,784.41 and 31,681.80 is: 43,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,539.85 : 80,784.41 = 31,681.80 : x
  2. Step 2: Convert to fraction form
    58,539.85/80,784.41 = 31,681.80/x
  3. Step 3: Cross multiply
    58,539.85x = 80,784.41 × 31,681.80
  4. Step 4: Simplify right side
    58,539.85x = 2,559,395,362.33
  5. Step 5: Solve for x
    x = 2,559,395,362.33/58,539.85
  6. Step 6: Final answer
    x = 43,720.57

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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.