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Finding the Fourth Proportional to 83,651.79, 115,440.30 and 45,411.63

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Solution

The fourth proportional to 83,651.79, 115,440.30 and 45,411.63 is: 62,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.79 : 115,440.30 = 45,411.63 : x
  2. Step 2: Convert to fraction form
    83,651.79/115,440.30 = 45,411.63/x
  3. Step 3: Cross multiply
    83,651.79x = 115,440.30 × 45,411.63
  4. Step 4: Simplify right side
    83,651.79x = 5,242,332,190.69
  5. Step 5: Solve for x
    x = 5,242,332,190.69/83,651.79
  6. Step 6: Final answer
    x = 62,668.50

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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.