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Finding the Fourth Proportional to 107,697.56, 148,668.57 and 76,672.80

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Solution

The fourth proportional to 107,697.56, 148,668.57 and 76,672.80 is: 105,841.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,697.56 : 148,668.57 = 76,672.80 : x
  2. Step 2: Convert to fraction form
    107,697.56/148,668.57 = 76,672.80/x
  3. Step 3: Cross multiply
    107,697.56x = 148,668.57 × 76,672.80
  4. Step 4: Simplify right side
    107,697.56x = 11,398,835,533.90
  5. Step 5: Solve for x
    x = 11,398,835,533.90/107,697.56
  6. Step 6: Final answer
    x = 105,841.17

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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.