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Finding the Fourth Proportional to 83,859.84, 115,728.75 and 45,621.77

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Solution

The fourth proportional to 83,859.84, 115,728.75 and 45,621.77 is: 62,959.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,859.84 : 115,728.75 = 45,621.77 : x
  2. Step 2: Convert to fraction form
    83,859.84/115,728.75 = 45,621.77/x
  3. Step 3: Cross multiply
    83,859.84x = 115,728.75 × 45,621.77
  4. Step 4: Simplify right side
    83,859.84x = 5,279,749,836.24
  5. Step 5: Solve for x
    x = 5,279,749,836.24/83,859.84
  6. Step 6: Final answer
    x = 62,959.22

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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.