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Finding the Fourth Proportional to 91,980.48, 138,023.93 and 38,668.24

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Solution

The fourth proportional to 91,980.48, 138,023.93 and 38,668.24 is: 58,024.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,980.48 : 138,023.93 = 38,668.24 : x
  2. Step 2: Convert to fraction form
    91,980.48/138,023.93 = 38,668.24/x
  3. Step 3: Cross multiply
    91,980.48x = 138,023.93 × 38,668.24
  4. Step 4: Simplify right side
    91,980.48x = 5,337,142,450.98
  5. Step 5: Solve for x
    x = 5,337,142,450.98/91,980.48
  6. Step 6: Final answer
    x = 58,024.73

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1.5x scale

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.