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Finding the Fourth Proportional to 83,616.02, 115,390.19 and 47,806.79

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Solution

The fourth proportional to 83,616.02, 115,390.19 and 47,806.79 is: 65,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,616.02 : 115,390.19 = 47,806.79 : x
  2. Step 2: Convert to fraction form
    83,616.02/115,390.19 = 47,806.79/x
  3. Step 3: Cross multiply
    83,616.02x = 115,390.19 × 47,806.79
  4. Step 4: Simplify right side
    83,616.02x = 5,516,434,123.96
  5. Step 5: Solve for x
    x = 5,516,434,123.96/83,616.02
  6. Step 6: Final answer
    x = 65,973.41

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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.