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Finding the Fourth Proportional to 77,334.97, 106,717.20 and 45,497.72

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Solution

The fourth proportional to 77,334.97, 106,717.20 and 45,497.72 is: 62,783.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,334.97 : 106,717.20 = 45,497.72 : x
  2. Step 2: Convert to fraction form
    77,334.97/106,717.20 = 45,497.72/x
  3. Step 3: Cross multiply
    77,334.97x = 106,717.20 × 45,497.72
  4. Step 4: Simplify right side
    77,334.97x = 4,855,389,284.78
  5. Step 5: Solve for x
    x = 4,855,389,284.78/77,334.97
  6. Step 6: Final answer
    x = 62,783.88

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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.